Massoud Hajia
Abstract
Clinical databases have been developed in recent years especially during the course of all medical concerns including laboratory results. The information produced by the diagnostic laboratories have great impact on health care system with various secondary uses. These uses are sometimes as publishing ...
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Clinical databases have been developed in recent years especially during the course of all medical concerns including laboratory results. The information produced by the diagnostic laboratories have great impact on health care system with various secondary uses. These uses are sometimes as publishing new extracted information of laboratory reports which have been widely applied in the scientific journals. Nowadays, some large scale or national databases are also formed from the integration of these data from smaller centers in the field of human health in many countries. These databases are beneficial for different stakeholders who may need these information. Unfortunately, reviewing some of these uses has indicated lots of errors in quality control, test validity, uniformity and so on. More importantly, some of the diagnostic procedures have been applied in the clinical diagnostic laboratories without even preliminary clinical evaluation studies. Therefore, any taken conclusion from these analyzed data may not be reliable. This use requires checking the several specifications that have been notified in this study. Current review also intends to show how the correct information should be to extract for the scientific reports, or integrated in large scale databases.
Hassan Ghasemi; Sajedeh Asghari Asl; Mohammad Ebrahim Yarmohammadi; Farhd Jafari; Pupak Izadi
Abstract
Background and Objectives: External dacryocystorhinostomy (DCR) is the method of choice to treat nasolacrimal duct (NLD) obstruction and the other approaches are compared with it, with a failure rate of 4% to 13%. The current study aimed to assess the causes of failure in external DCR by postoperative ...
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Background and Objectives: External dacryocystorhinostomy (DCR) is the method of choice to treat nasolacrimal duct (NLD) obstruction and the other approaches are compared with it, with a failure rate of 4% to 13%. The current study aimed to assess the causes of failure in external DCR by postoperative endoscopic and pathological evaluation. Methods: The current retrospective cross sectional study followed-up113 patients with external DCR and silicone intubation for three months. Silicone tubes were removed after the third months. Failure was confirmed based on the clinical findings and irrigation test. Paranasal sinus computed tomography (CT) scanning, and endoscopic and pathological evaluations were performed in the failed cases. Results: Totally, 113 patients underwent external DCR. The patients included 71 females and 42 males. The mean age of the patients was 55.91 years; ranged from 18 to 86. Epiphora was the most common complaint before surgery (90.3%). Clinically, epiphora continued in 17 cases (15%), of which 94.11% had at least one sinus CT abnormality and 82.35% had at least one endoscopic abnormality. The most common endoscopic findings were deviated septum (70.6%), scar tissue (52.94%), concha bullosa (46.9%), septal adhesion (47.05%), enlarged middle turbinate (41.2%), and sump syndrome (11.7%). The failure was significantly associated with the chronicity of the initial symptoms (P-value=0.00). Pathologically, there were significant relationship amongst the failure rate, scar formation, and allergic rhinitis (P-values =0.00 and <0.05, respectively). Conclusion: Preoperative endonasal evaluation and consultation with an otolaryngologist can improve surgical outcomes and help to have a better conscious to intranasal abnormalities before external DCR surgery.
Bita Geramizadeh; Mahsa Marzban; Andrew Churg
Volume 11, Issue 3 , July 2016, , Pages 195-203
Abstract
Background: Solitary fibrous tumor (SFT) is a mesenchymal tumor which is most commonly seen in the pleura; however it can be seen in other organs such as the meninge, gastrointestinal tract, soft tissue, bone, and skin. SFT should be differentiated from other mesenchymal tumors in these organs. Immunohistochemistry ...
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Background: Solitary fibrous tumor (SFT) is a mesenchymal tumor which is most commonly seen in the pleura; however it can be seen in other organs such as the meninge, gastrointestinal tract, soft tissue, bone, and skin. SFT should be differentiated from other mesenchymal tumors in these organs. Immunohistochemistry plays a pivotal role for the histopathologic diagnosis of this tumor. Currently, new markers have been introduced which has been very useful for definite diagnosis of SFT along with other markers in each specific location which are negative in SFT. Methods: Here we review the reported positive and negative immunohistochemical markers of SFT in the English literature with the emphasis on the useful markers in each specific organ. We explored the English literature from 1990 through 2015 via PubMed, Google, and Google scholar using the following search keywords: Solitary fibrous tumor, Solitary fibrous tumor and immunohistochemistry, Solitary fibrous tumor and diagnosis, Solitary fibrous tumor and histogenesis, Solitary fibrous tumor and prognosis, Solitary fibrous tumor and hemangiopericytoma, Solitary fibrous tumor and differential diagnosis, Solitary fibrous tumor and markers. Results: The most important and valuable positive markers in SFT are CD34, CD99, Bcl-2 and STAT-6.There are consistently negative markers in this tumor as well, used according to the tumor location, such as EMA and S100 Conclusion: Immunohistochemistry is very useful for the diagnosis of solitary fibrous tumor and for its differentiation with other spindle cell mesenchymal tumor in different locations.
How to cite this article:
Geramizadeh B, Marzban M, Churg A. Role of Immunohistochemistry in the Diagnosis of Solitary Fibrous Tumor, a Review. Iran J Pathol. 2016; 11(3):195-293.
Alireza Abdollahi; Mohammad Reza Jalali Nadoushan
Volume 6, Issue 1 , January 2011, , Pages 201-201
Maryam Sotoudeh Anvari; Mohammad Ali Boroumand; Elham Amelimojarad; Marjaneh Nosrati; Neda Moradi; Hamidreza Goodarzynejad
Volume 8, Issue 4 , October 2013, , Pages 209-218
Abstract
Background and Objectives: Bacterial bloodstream infections (BSIs) and surgical site infections (SSIs) are among the most common nosocomial infections with high mortality and morbidity. We aimed to evaluate the frequency of various species among BSIs and SSIs at Tehran Heart Center, Tehran, Iran. Methods: ...
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Background and Objectives: Bacterial bloodstream infections (BSIs) and surgical site infections (SSIs) are among the most common nosocomial infections with high mortality and morbidity. We aimed to evaluate the frequency of various species among BSIs and SSIs at Tehran Heart Center, Tehran, Iran. Methods: Patients with localized or systemic infections that became evident 48 hours or more after hospitalization were included. Data were prospectively collected in 4 intensive care units (ICUs), 5 cardiac care units (CCUs), 7 post-CCUs, and 5 surgical wards during two consecutive years in 2008 and 2009. Approximately 18414 coronary angiography and 7393 open-heart surgeries were done within this period. Antimicrobial susceptibility testing was performed by the Kirby–Bauer disk diffusion method, in accordance with the Clinical and Laboratory Standards Institute (CLSI) guidelines. Results: Among 212 detected patients with SSI and/or BSI in the year 2008, 138 had hospital acquired infection (HAI) and 74 had non–HAI while these figures for 2009 was 165/270 and 105/270, respectively. Staphylococcus aureus (21.5%) and Entrobacter spp. (16.5%) were two most common pathogens responsible for hospital acquired BSIs while S. aureus (20.6%) and S. epidermidis (20.6%) were corresponding isolates responsible for community acquired BSIs. Staphylococcus aureus (53.3%) and Escherichia coli (11.0%) were the two most common pathogens responsible for hospital acquired SSIs in the year 2008, while S. aureus (49.0%) and S. epidermidis (11.0%) were the most frequently reported hospital acquired SSIs in 2009. Conclusions: Making rational decisions about hospital infection control plans may reduce infection rates for bacteria with antimicrobial resistance.
Alireza Abdollahi; Saeed Shoar
Volume 7, Issue 4 , September 2012, , Pages 209-214
Abstract
Background & Objective: There are many common infections and inflammations among people over the world. This demands an affordable and reliable test with high sensitivity/specificity to predict or confirm the diagnosis of such cases in routinely clinical practice. In the present study, we aimed to ...
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Background & Objective: There are many common infections and inflammations among people over the world. This demands an affordable and reliable test with high sensitivity/specificity to predict or confirm the diagnosis of such cases in routinely clinical practice. In the present study, we aimed to find any potential correlation between serum levels of GGT and CRP- Q and/or hs- CRP and WBC count as the well- known markers of inflammation in human body.
Materials and Methods: Through a cross- sectional study, serum levels of CRP-Q, hs- CRP, and GGT, in addition to WBC count were measured in 1,500 healthy people, referred to Blood Transfusion Organization from across the country. Data were analyzed after the patients were checked by physical examination for ruling out the presence of any inflammation or other illness. Serum levels of GGT, CRP- Q, hs- CRP, and WBC count were analyzed by SPSS for windows version 16.
Results: Analysis showed a positive linear correlation between CRP- Q and hs- CRP with GGT also confirmed by non- parametric tests.
Conclusion: Serum GGT may be an inflammatory index and a useful marker in approaching to inflammatory diseases.
Biochemistry
Mohammad Abdi; Abbas Ahmadi; Aram Mokarizadeh
Abstract
Recently, prevalence of hepatitis B virus (HBV), and hepatitis C virus (HCV) co-infection with Human immunodeficiency virus (HIV), has dramatically increased worldwide due to their shared routes of transmission. Compared to sporadic infection with HIV, HBV, and HCV, concurrent infection with these agents ...
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Recently, prevalence of hepatitis B virus (HBV), and hepatitis C virus (HCV) co-infection with Human immunodeficiency virus (HIV), has dramatically increased worldwide due to their shared routes of transmission. Compared to sporadic infection with HIV, HBV, and HCV, concurrent infection with these agents increases the effects and complications of these viruses. Furthermore, co-infection may also alter therapeutic strategies against HIV. Accordingly, choosing appropriate biomarkers to detect these co -infections is one of the main concerns in the field of diagnostic pathology. Up to now, several markers have been introduced for simultaneous diagnosis of HIV, HBV, and HCV. In this regard, serum adenosine deaminase activity (ADA), Fibro Tests, AST-to-Platelet Ratio Index (APRI), Fibrosis-4, Hyaluronic acid, and micro ribonucleic acids have been investigated as potential biomarkers for diagnosis of HIV-HCV/HBV co-infections. This work summarizes the diagnostic value of current and emerging biomarkers in HIV patients concurrently infected with HBV and HCV.
Shelly Sehgal; Prashant Goyal; Soumyesh Ghosh; Deepti Mittal; Sompal Singh
Volume 9, Issue 4 , October 2014, , Pages 237-244
Abstract
In patients with malignancy, the common etiologies of granuloma formation are tumor related sarcoid reaction, sarcoidosis, tuberculosis and other granulomatous diseases. Often, the finding of granulomas in malignant patients may obscure the primary malignancy or may mislead towards treatment of infectious ...
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In patients with malignancy, the common etiologies of granuloma formation are tumor related sarcoid reaction, sarcoidosis, tuberculosis and other granulomatous diseases. Often, the finding of granulomas in malignant patients may obscure the primary malignancy or may mislead towards treatment of infectious and other etiologies. Hence, their proper recognition and necessary follow up is needed to establish the cause of granulomatous lesions and for proper management of patients.
Forough Hashemi; Pegah Babaheidarian; Soheila Dabiran
Abstract
Background: Meningioma is among the most common slow growing central nervous neoplasms, which recurs locally despite the benign histologic features. The aim of this study was to evaluate osteopontin and ki67 expressions in different histologic grades of meningioma in a group of Iranian people. Methods: ...
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Background: Meningioma is among the most common slow growing central nervous neoplasms, which recurs locally despite the benign histologic features. The aim of this study was to evaluate osteopontin and ki67 expressions in different histologic grades of meningioma in a group of Iranian people. Methods: In this cross-sectional study, first, the paraffin blocks with the definite pathological diagnosis of meningioma in 70 patients were cut by microtome, in 4-5 micron sizes and stained for immunohistochemical markers of osteopontin and ki67. Then, all samples were evaluated for positive immunoreactivity and contributing factors. Results: Among 70 pateints studied, the mean for the Ki67 level was 8.6±12.3 and the mean for the osteopontinm IHC score was 45.2±77.9. There was a high correlation between markers, tumor recurrence and grade (P<0.001). In addition, there was a significant direct correlation between ki67 and osteopontin levels (P<0.001, r=0.760). In other words, as OPN and ki67 expressions increased, the chance of tumor recurrence increased. Conclusion: ki67 and osteopontin expressions in patients with meningioma can be used as good prognostic markers for tumor recurrence and for distinguishing the grade of meningiomas.
How to cite this article: Hashemi F, Babaheidarian P, Dabiran S. Are Osteopontin and Ki67 Expressions Different in Various Histologic Grades of Meningioma? An Iranian Experience. Iran J Pathol. 2015; 10(4): 253 - 257.
Hematopathology
Anahita Nosrati
Abstract
Coronaviruses are considered to be one of the most significant human and animal pathogens. In late 2019, a new species of coronavirus was recognized as the cause of some pneumonia cases in Wuhan, China. The disease spread rapidly and made an epidemic in China and subsequently in almost all countries ...
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Coronaviruses are considered to be one of the most significant human and animal pathogens. In late 2019, a new species of coronavirus was recognized as the cause of some pneumonia cases in Wuhan, China. The disease spread rapidly and made an epidemic in China and subsequently in almost all countries in the world. In February 2020, the World Health Organization (WHO) named it as COVID-19 standing for Coronavirus 2019 (1). Due to being a pandemic issue, it is needed to discuss various aspects of this viral disease. Recently, Yan Zhang et al. reported a case of coagulopathy and antiphospholipid antibodies in the patient with severe COVID-19 infection (2). Thus, one of the serious complications of COVID-19 that should be taken into consideration is coagulopathy with possible anti-phospholipid antibodies syndrome in these patients. In this regard, some studies also claimed that COVID-19 could cause venous and arterial thromboembolism because of excessive inflammation, hypoxia, immobility, and diffuse intravascular coagulation (3). Antiphospholipid syndrome is a systemic autoimmune disease with vascular and hematologic complications as venous and arterial thrombosis or pregnancy morbidity (4). It is well known that infectious agents are one of the major stimulators of the antiphospholipid antibodies in vivo (5), thus, COVID-19 can be a possible cause of this phenomenon within its infection period and consequently, positive results of antiphospholipid antibodies detection are not unexpected.
Dermatopathology
Pouri Salehi; Farzaneh Tafvizi; Kambiz Kamyab Hesari
Abstract
Background & Objective: Malignant melanoma is the fatal cutaneous neoplasm which is curable by the early diagnosis. The expression of occludin protein which is an integral membrane protein is altered in an epithelial-to-mesenchymal transition. Although, recent studies provide sufficient evidence ...
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Background & Objective: Malignant melanoma is the fatal cutaneous neoplasm which is curable by the early diagnosis. The expression of occludin protein which is an integral membrane protein is altered in an epithelial-to-mesenchymal transition. Although, recent studies provide sufficient evidence supporting the functional importance of occludin in cancer, the prognostic significance of occludin expression levels in melanoma remains obscure. The aim of this study was to determine occludin expression level and itscorrelation with clinicopathological features of the patients with melanoma. Methods: The occludin mRNA level was compared between paraffin-embedded tissues of 40 patients with melanoma and 10 subjects with normal skin. The quality and quantity of the RNA was determined and occludin expression level was measured using Real-time PCR and ∆∆CT computational technique. Result: Theoccludin mRNA level reduced five-fold in the melanoma patients compared to the control group (P=0.000). No significant difference was observed between male and female cases (P=0.533). No significant correlation was observed between occludin mRNA level, mitotic count (P=0.252), and Breslow levels (P=0.171) Conclusion: We can conclude that down-regulation of occludin expression in the patients with melanoma is a hallmark of cancer progression and it might be used as a prognostic factor. No significant correlation was found between occludin gene expression and clinicopathological characteristics including Clark level, Breslow staging, mitotic count, age and gender (P<0.05).
Hematopathology
Mohammad Hadi Sadeghian; Zahra Rezaei dezaki
Volume 13, Issue 3 , July 2018, , Pages 294-300
Abstract
Acute myeloid leukemia (AML) as a distortion of blood cells involves the differentiation of hematopoietic stem cells. Several studies established the irregular overexpression of specific genes is a common finding in patients with AML. The ectopic viral integration site-1 (EVI1) gene is a proto-oncogene ...
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Acute myeloid leukemia (AML) as a distortion of blood cells involves the differentiation of hematopoietic stem cells. Several studies established the irregular overexpression of specific genes is a common finding in patients with AML. The ectopic viral integration site-1 (EVI1) gene is a proto-oncogene subject to alternative splicing, and encodes a zinc-finger protein that acts as a transcriptional regulator in early development. Forced overexpression of EVI1 in hematopoietic progenitors later induced a myeloid differentiation block. The current review aimed at determining the prognostic value of EVI1 expression in patients with AML in the age range of one month to fifteen years. The scientific databases including PubMed, Google Scholar, EMBASE, Scopus, and ISI published up to January 2016 were searched using the conformity keywords and a total of four articles were studied. Three articles declared higher overexpression of EVI1 in patients with mixed-lineage leukemia (MLL) rearrangements. The percentage of overall survival (OS), reported in two articles, decreased in AML patients with high EVI1 expression. A study reported that the relationship between EVI1 expression and OS was negligible in cases with and without EVI1 expression. Another study showed significant differences in event free survival (EFS) and OS in the group of patients with positive MLL-AF9 between EVI1+ and EVI1- patients. The current study revealed that high EVI1 expression was not a poor prognostic factor in pediatric patients with AML. And this gene expression was mainly prognostic concomitantly by other factors such as MLL rearrangement, MEL1 expression, and white blood cell (WBC) count.
Soussan Irani
Volume 11, Issue 4 , October 2016, , Pages 303-322
Abstract
Many types of cancers develop in the oral and maxillofacial region. Squamous cell carcinoma is the most common cancer and constitutes over 90 percent of these tumors. Malignant transformation is a genetic process, which later makes a phenotyping change at the cellular level. Some cancers such as oral ...
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Many types of cancers develop in the oral and maxillofacial region. Squamous cell carcinoma is the most common cancer and constitutes over 90 percent of these tumors. Malignant transformation is a genetic process, which later makes a phenotyping change at the cellular level. Some cancers such as oral squamous cell carcinomas (OSCCs) develop from pre-malignant lesions and conditions. Despite advances in the treatment of OSCC, the 5-year survival rate remains approximately 50% due to inability of early detection of OSCC and precursor lesions. Early detection of oral cancer, especially in the premalignant stage, can decrease mortality and morbidity significantly. This article reviews some clinical, histopathological features and etiopathogenesis of pre-cancerous lesions of the oral cavity and skin of face and lip vermilion. A relevant English literature search in Pubmed, Science Direct, and Google Scholar was performed from 1930 to 2015. Full text of 191 articles met the specific inclusion criteria for this review.
Hematopathology
Maliheh Khoddami; Seyed Alireza Nadji; Paria Dehghanian
Abstract
Background and objective: Langerhans cell histiocytosis (LCH) is a rare histiocytic proliferative disorder of unknown etiology and mainly affects young children. The histological feature is granuloma-like proliferation of langerhans-type dendritic cells. Although the possible role of viruses such ...
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Background and objective: Langerhans cell histiocytosis (LCH) is a rare histiocytic proliferative disorder of unknown etiology and mainly affects young children. The histological feature is granuloma-like proliferation of langerhans-type dendritic cells. Although the possible role of viruses such as Epstein-Barr virus (EBV, Human Herpes virus -4), Human Herpes virus-6 (HHV-6), Herpes Simplex virus (HSV) types 1 and 2 and Cytomegalovirus (CMV, Human Herpes virus-5) is suggested in the pathogenesis of LCH by some investigators, its exact pathophysiology has not been cleared yet. In this study, we investigated the presence of HSV types 1 and 2 in Iranian children with LCH Methods: In this retrospective study, we investigated the prevalence of presence of HSV types 1 and 2 (in 30 patients with LCH), using paraffin-embedded tissue samples and 30 age and tissue-matched controls (operated for reasons other than infectious diseases) from the Department of Pediatric Pathology, Tehran, Iran, by nested Polymerase Chain reaction method. No ethical issues arose in the study, because only the pathology reports were reviewed and patients were anonymous. Results: We failed to find HSV types 1 and 2 DNA in any of the 30 patients with LCH or the control group. Conclusion: According to our findings, HSV types 1 and 2 do not appear to have any etiologic role in the pathogenesis of LCH in Iranian children. These results are in accordance with previous investigations with negative findings.
Farid Kosari; Fatemeh Ghaffari
Volume 13, Issue 4 , October 2018, , Pages 390-396
Abstract
Background and Objective: Hodgkin's lymphoma is a potentially curable hematologic malignancy with difficulty in its diagnosis especially in atypical cases even in expert hands. Today, immunohistochemistry plays a significant role in the diagnosis of it especially applying the anti-CD15 and anti-CD30 ...
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Background and Objective: Hodgkin's lymphoma is a potentially curable hematologic malignancy with difficulty in its diagnosis especially in atypical cases even in expert hands. Today, immunohistochemistry plays a significant role in the diagnosis of it especially applying the anti-CD15 and anti-CD30 antibodies. The negativity of CD15 can be reduced by antigen retrieval for methods. In this study, the effect of autoclave was compared with microwave as heating sources of antigen retrieval in immunohistochemical staining.Methods: Sections prepared from 50 formalin-fixed paraffin-embedded tissue blocks of Classic Hodgkin's lymphomas stained for CD15 and CD30 using autoclave and microwave, were randomly and blindly reviewed by an expert hematopathologist, mostly focusing on Reed-Sternberg cells; the intensities were scored from 0 to +4 and analyzed by SPSS software.Results: Fifty eight percent of patients were male. The mean age was 32 years (range: 7 to 77). Nodular sclerosis was the most prevalent subtype. CD15 positivity in microwave treatment was 92% compared to 50% in autoclave. Negative CD30 decreased from 20% in autoclave to 2% in microwave. Intensity of staining in both markers was at least +1 greater in microwave treatment. No background staining was seen in microwave method.Conclusion: There was bimodal age distribution in Hodgkin's lymphoma patients with the predominant male and Nodular Sclerosis as the most common type. Comparing autoclave and microwave, higher rate of the positivity was detected using microwave treatment, especially in CD15 staining. Improvement in staining intensity was also noticeable in both markers. There was no background or non-specific staining in microwave method. No disturbance of cells or nuclear morphology was also reported. PMID: 30774676 PMCID: PMC6358563
Mina Majdi; Hana Saffar; Alireza Ghanadan
Volume 11, Issue 5 , October 2016, , Pages 423-426
Abstract
Cutaneous metaplastic synovial cyst (CMSC), presents as a solitary, tender subcutaneous nodule that usually occurs at the site of previous surgery or trauma. Histologically, the lesion is characterized by a cystic structure with villous-like projections that lined by metaplastic synovial tissue. The ...
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Cutaneous metaplastic synovial cyst (CMSC), presents as a solitary, tender subcutaneous nodule that usually occurs at the site of previous surgery or trauma. Histologically, the lesion is characterized by a cystic structure with villous-like projections that lined by metaplastic synovial tissue. The main cause remains unclear, but trauma is presumed to be a precipitating factor, as most reported cases have a history of antecedent cutaneous injury. Here we present a case of CMSC in a 51 yr old man, presented with a painless deep-seated dermal nodule in the medial aspect of left ankle without history of any trauma or surgery in this site. Immuno-histochemistry study reveals positive reaction for CD68 in the cystic wall and negative reactions for S-100. CMSC is a unique lesion and worthy to attention, and should be included in the differential diagnosis of deep dermal cutaneous cysts.
Elahe Keyhani; Jalal Gharesouran; Kimia Kahrizi; Yousef Shafeghati; Hossein Najmabadi; Mehdi Banan; Fatemeh Moghaddam; Elham Darabi
Volume 5, Issue 1 , January 2010, , Pages 2-8
Abstract
Background and Objective: Becker Muscular Dystrophy (BMD) is a subtype of dystrophinopathies and designated as “mild form of dystrophinopathy”. The frequency rate of the disease is 1:18000 to 1:30000 in different populations and the symptoms are presented at about 8-9 years of age. ...
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Background and Objective: Becker Muscular Dystrophy (BMD) is a subtype of dystrophinopathies and designated as “mild form of dystrophinopathy”. The frequency rate of the disease is 1:18000 to 1:30000 in different populations and the symptoms are presented at about 8-9 years of age. The diagnostic panel composed of Serum Ceratin Kinase (SCK) measurement, Electromyography (EMG), and as a major component, muscle biopsy and immunohistochemistry for dystrophines; finally the results should be confirmed by Western blot (WB) analysis, which is a sensitive method for protein detection. The aim of this study was using utrophin, an autosomal homologue for dystrophin, which is upregulated in dystrophinopathies, parallel to WB in order to evaluate its diagnostic value. Materials & Methods: In this case-control study, fifteen clinically suspected cases of BMD were examined from 2006 to 2008. After muscle biopsy and dystrophin IHC, the muscle samples were immunostained for utrophin and the tissue extract were analyzed for protein components. Results: In all of the cases, the results revealed partial staining for utrophin in the sarcolemma and pale or distorted band of dystrophin in WBA. Conclusion: Utrophin immunostain could be considered as an important component of BMD diagnostic panel and may be substituted for WBA, which is an expensive and time-consuming method.
Fariba Abbasi; Zahra Yekta; Adel Aryan
Volume 7, Issue 1 , January 2012, , Pages 3-8
Abstract
Background and Objective: Intraoperative consultation by frozen section is a high – risk procedure with important consequences. Therefore, it is critical to determine efficiency of frozen section performance periodically. This study was performed to determine the accuracy of frozen section in Urmia ...
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Background and Objective: Intraoperative consultation by frozen section is a high – risk procedure with important consequences. Therefore, it is critical to determine efficiency of frozen section performance periodically. This study was performed to determine the accuracy of frozen section in Urmia University of Medical Sciences.
Materials & Methods:Inthis cross sectional study, we compared the results of 200 consecutive cases of frozen sections with their final permanent section diagnoses in teaching hospitals of Urmia University of Medical Sciences during March 2001 to March 2008.
Results: A total of 155 neoplastic and 45 nonneoplastic specimens were studied. The overall accuracy of frozen sections was 96.5%. In diagnosis of neoplastic lesions, sensitivity, specificity, positive and negative predictive values and accuracy were 93.1%, 97.7%, 96%, 95% and 95.9%, respectively.
Conclusion: In this university interpretation of frozen sections is done with high accuracy and is valuable to help surgeons to plan the best management of the operation.
Mohammad Banifazl; Amitis Ramezani; Ali Eslamifar; Arezoo Aghakhani
Volume 6, Issue 1 , January 2011, , Pages 3-7
Abstract
Human papillomavirus (HPV) is one of the most common causes of sexually transmitted diseases worldwide and is the etiological agent of cervical and other anogenital malignancies. Since HPVs have been shown to possess oncogenic potential, an association between HPV infection and prostatic cancer ...
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Human papillomavirus (HPV) is one of the most common causes of sexually transmitted diseases worldwide and is the etiological agent of cervical and other anogenital malignancies. Since HPVs have been shown to possess oncogenic potential, an association between HPV infection and prostatic cancer (PCa) has been suggested. There are conflicting reports on the impact of HPV infection on the development of prostate cancer. The aim of this article is to review the studies that investigated the association between HPV and PCa. The results of this review demonstrated the divergent frequencies of HPV positivity in PCa in different geographic areas.
Alireza Abdollahi; Sedighe Borna; Fatemeh Mirzaei; Akram Sarbiaei
Volume 4, Issue 1 , January 2009, , Pages 5-8
Abstract
Background and Objectives: Preterm labor is a serious problem in obstetrics, accounting for 70% of perinatal mortality. High sensitive C - reactive protein (HS-CRP) is a sensitive marker of Inflammation. Our aim in this study was to determine Amniotic fluid hs-CRP concentration and its correlation ...
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Background and Objectives: Preterm labor is a serious problem in obstetrics, accounting for 70% of perinatal mortality. High sensitive C - reactive protein (HS-CRP) is a sensitive marker of Inflammation. Our aim in this study was to determine Amniotic fluid hs-CRP concentration and its correlation with pre-Term delivery. Materials and methods: This prospective study was conducted on 90 pregnant women who underwent genetic amniocentesis between the 15th and 20th weeks of gestation. All patients were followed until delivery. Pateints with abnormal karyotype and iatrogenic preterm delivery for fetal and maternal indications were excluded. The samples were carried immediately to the laboratory of Imam Khomaini Hospital Complex, Tehran, Iran for cytogenetic examination and tested for HS-CRP by turbidimetric method. Non parametric tests and receiver-operating characteristics curve analysis were used for statistical purpose. Results: The study showed no correlation between amniotic fluid HS-CRP concentrations with preterm delivery. Maternal serum alpha-fetoprotein (AFP) levels were higher in patients delivered preterm compared with term deliveries (P=0.036). Conclusion: Our results implicated that HS-CRP like other acute phase response markers was not as a possible risk marker of preterm delivery.
Mehdi Seilanian Toosi; Mohammad Reza Ghavam Nasiri; Kamran Ghafarzadegan; Azar Fani Pakdel; Roham Salek; Kazem Anvari
Volume 3, Issue 1 , January 2008, , Pages 5-10
Abstract
Background and Objective: P53 is a suppressive gene that plays a key role in DNA repair and apoptosis. The purpose of this study was to investigate the effect of P53 protein over-expression and some clinicopathological factors on the esophageal squamous cell carcinoma (SCC) response to neoadjuvant chemoradiotherapy. ...
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Background and Objective: P53 is a suppressive gene that plays a key role in DNA repair and apoptosis. The purpose of this study was to investigate the effect of P53 protein over-expression and some clinicopathological factors on the esophageal squamous cell carcinoma (SCC) response to neoadjuvant chemoradiotherapy. Patients and Methods: In this retrospective cohort study, 44 patients with localized esophageal SCC undergoing neoadjuvant chemoradiotherapy (cisplatin + 5FU and 40 Gy in 20 fractions of irradiation) and surgery were evaluated. Pretreatment specimens were immunohistochemically assessed for p53 over-expression and scored according to the frequency of stained cells. The pathologic response in resected specimens was categorized as follows: complete response (CR), no evidence of malignant cell; partial response (PR), small foci of malignant cells and negative lymph nodes and minor response, macroscopic residual tumor or positive lymph nodes. Results: It was found out that p53 protein over-expression exists in 29 cases (65.9%). Following chemoradiotherapy, CR and PR were found in 9 (20.5%) and 19 cases (43.2%) respectively. There were also no significant association between tumor response and clinicopathological features such as sex (p = 1), age (p = 0.82), dysphagia grade (p = 0.82) and longitudinal length of the tumor (p = 0.59). No significant correlation was found between p53 expression and pathological response to preoperative chemoradiotherapy (p = 0.94). Conclusion: These findings suggest that p53 protein expression is not reliable for predicting the response to neoadjuvant chemoradiotherapy. There were also no correlations between pathological response to chemoradiotherapy and clinical features such as age, sex, dysphagia grade and longitudinal diameter of the tumor.
Alireza Monsef1; Fatemeh Eghbalian; S. Mahmoud Hessinipanah; Mohammad Abbasi4; Hossein Mahjoub
Volume 1, Issue 1 , January 2006, , Pages 7-12
Abstract
Objective: Breast cancer comprise approximately one third of malignant cases in women and is considered as the most common invasive condition in women at an age range of 15-54 years and as the second most prevalent cause of mortality at an age range of 55-74 years. Tumor inhibiting factor p53 is a vital ...
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Objective: Breast cancer comprise approximately one third of malignant cases in women and is considered as the most common invasive condition in women at an age range of 15-54 years and as the second most prevalent cause of mortality at an age range of 55-74 years. Tumor inhibiting factor p53 is a vital homeostatic regulator and its inactivation at the related gene or molecule could lead to tumor growth and development in various tissues. Therefore, in this research study it was tried to evaluate the diagnostic methods Ag-NOR and p53 immunohistochemistry in malignancy of mammary gland using cytochemical staining methods and its relationship with tumor grade. Materials and Methods: In this research study, 50 referred breast specimens to Deaprtment of Pathology (Sina Hospital, Hamedan) were studied. They were processed as usual and 3 micrometer sections were prepared from related blocks. Then, staining methods for nucleolus organizing regions (Ag-NOR) and p53 immunohistochemistry were applied. Out of these specimens, 41 had malignancy (40 cases of invasive ductal carcinoma and 1 case of invasive lobular carcinoma) and 9 cases were normal. The latter cases were compared with malignant ones. Tumor grade in studied individuals was I (3 cases; 7.3%), II (23 cases; 56.1%), and III (15 cases; 36.6%) respectively. Results: Statistical analysis of data showed that there is only a significant difference regarding frequency distribution of cluster shape and there is no such difference for satellite shape, satellite size, and cluster size. In addition, staining intensity for p53+, p53++, and p53+++did not show any significant difference in various grades of the disease. Using Spearman regression analysis, it was found out that there was a relationship between p53 negative and p53+ (r = 0.723) (p<0.01) and between p53+ and p53++ (r = 0.78). Furthermore, it was found out that a higher expression of p53 protein is negatively correlated with darklystained granules using silver nitrate method. Conclusion: These findings showed that higher expression of p53 protein is negatively correlated with darkly-stained granules using Ag-NOR method and this may indicate its antitumor activity. It appears that this method is an essential tool for evaluation of normal and malignant cases of breast tissue regarding its replication pattern and intensity and expression of those chromosomal segments which are involved in encoding of ribosomal RNA.
Parvin Rajabi; Mohammad Aboutalebdokht; Mitra Heidarpour; Ali Asilian; Fatemeh Rajabi
Volume 2, Issue 1 , January 2007, , Pages 7-10
Abstract
Background and Objective: Basal cell carcinoma (BCC) and squamous cell carcinoma (SCC) are two common tumors of the skin. In some cases, distinction between BCC and SCC can be difficult. This study aimed to clarify this uncertainty through immunohistochemical analysis. In this respect, epithelial membrane ...
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Background and Objective: Basal cell carcinoma (BCC) and squamous cell carcinoma (SCC) are two common tumors of the skin. In some cases, distinction between BCC and SCC can be difficult. This study aimed to clarify this uncertainty through immunohistochemical analysis. In this respect, epithelial membrane antigen (EMA) and Ber-Ep4 are the two immunohistochemical markers on which we focus in differentiating skin BCC from SCC. Materials and Methods: Archived paraffin-embedded tissue samples of BCC (n = 40) and SCC (n=40) were stained immunohistochemically using Ber-Ep4 and EMA antibodies. Results: It was found out that 37 (92.5%) out of the BCC samples stained positive for Ber-Ep4 and 2.5% of SCC samples showed positive staining. The majority of SCC group (37 out of 40) expressed EMA, while 5% of BCC samples showed positive staining. Conclusion: Distinction of BCC and SCC of the skin can be readily achieved through Ber-Ep4 and EMA immunohistochemical markers. Regarding potential false positive and negative results through immunostaining techniques, we may recommend the use of these two antibodies together.
Maryam Ghasemi; Laleh Vahedi-larijani; Omid Emadian; Jamshid Yazdani; Ahmad Sajadianfar; Saeid Abediankenari
Abstract
Background & Objective: This study was designed for the first time for the detection of mutant BRAF V600E and its correlation with clinicophathologic features in a sample of Iranian patients with pathologically proved pigmented skin neoplasms.Methods: 82 paraffin-embedded blocks, including melanocytic ...
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Background & Objective: This study was designed for the first time for the detection of mutant BRAF V600E and its correlation with clinicophathologic features in a sample of Iranian patients with pathologically proved pigmented skin neoplasms.Methods: 82 paraffin-embedded blocks, including melanocytic nevi, malignant melanoma, Basel cell carcinoma, and squamous cell carcinoma were evaluated for BRAF V600E expression by immunohistochemistry in the patients admitted to Ibn Sina Hospital, in the city of Sari, Mazandaran province, North of Iran. The evaluation of immunohistochemical staining was performed by two of the authoring pathologists, and staining intensity was graded from negative (0), weak (1+), moderate (2+) to strong (3+). If twenty percent (or greater) of the tumor cells showed modest to strong cytoplasmic immunoreactivity (score 3+), the neoplasm was considered positive for this tumor marker.Results: Among 82 studied patients, 12 cases (60%) of the malignant melanoma group revealed a high intensity of immunostaining for BRAF V600E, while a significant expression of this marker did not occur in the other investigated skin neoplasm. A great relation between BRAF (V600E) expression and the histologic type of skin cancer was noted. No significant relationship with other parameters such as gender, age, and the grade differentiation of the non-melanoma skin cancer was found. BRAF V600E was weakly correlated with the Clark level of cutaneous malignant melanoma.Conclusion: This data provided further
Neuropathology
Masoumeh Shafiei; Ahmad Mafi; Yalda Nilipour; Ainaz Sourati; Pegah Sasanpour; Morteza Tabatabaeefar
Abstract
Background & Objective:Gliomas are the most common type of primary intracranial tumors in adults. The expression of estrogen receptors varies in different grades of glial tumors, and some studies have suggested that this expression might have a prognostic value. It seems that estrogen receptor expression ...
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Background & Objective:Gliomas are the most common type of primary intracranial tumors in adults. The expression of estrogen receptors varies in different grades of glial tumors, and some studies have suggested that this expression might have a prognostic value. It seems that estrogen receptor expression negatively correlates with the histological grade of gliomas. In the present study, we aimed to determine the expression of estrogen receptor in different glial tumors in Iranian patients and to find a possible correlation between its expression and the grade of glial tumors.Methods:The brain tumors pathology reports from 2014 to 2017 in the Pathology Department of Shohaday-e Tajrish Hospital in Tehran, Iran were evaluated and 104 different gliomas: 79 cases of astrocytoma and 25 cases of oligodendroglioma were selected. All the samples were re-evaluated by a neuropathologist in order to accurately determine the tumor grade. The immunohistochemistry was carried out to detect the expression of estrogen receptor alpha and beta on brain tumors.Results:None of the samples expressed estrogen receptor alpha. In the case of estrogen receptor beta (ERβ), all samples showed various degrees of positivity: 9% weak, 40% moderate, and 51% strong expressions. The level of ERβ expression was found to be conversely correlated with tumor grade.Conclusion:Our study demonstrated that ERβ is expressed in the majority (if not all) of the glial tumors and its expression was conversely related to the tumor grade. Because of well-tolerability and acceptable adverse effects, ER agonists might be considered as therapeutic agents for the patients with glial tumors.
