Afsaneh Rajabiani1; Fatemeh Kamrani Kanafi; Naser Kamalian; Saeed Shoar; Alireza Abdollahi; Sara Sheikhbahaei
Volume 8, Issue 3 , July 2013, , Pages 189-193
Abstract
Salivary gland tumors accounts for less than 1% of all tumors. Minor salivary gland tumors (MSGTs) are uncommon and make up about 10% of all salivary gland neoplasms. The clinical and histopathological distribution ...
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Salivary gland tumors accounts for less than 1% of all tumors. Minor salivary gland tumors (MSGTs) are uncommon and make up about 10% of all salivary gland neoplasms. The clinical and histopathological distribution of these tumors vary geographically. A case of a 38 yr old man with a minor salivary gland mass at chin region isreported here. The tumor invaded into the anterior surface of the mandible bone and the surrounding soft tissues. The tumor was resected completely with a safe surgical margin of soft tissue and adjacent bone. Histologically, the tumor is characterized by a biphasic pattern, composed of admixture of epithelial and stromal components, associated with cytological atypia and prominent mitoses. The stromal elements are myxoid, chondroid, and osteoid. The chondroid component is more abundant and shows more atypical changes. Overall, the findings were interpreted as malignant pleomorphic adenoma of minor salivary glands of buccal mucosa.
Fahimeh Asadi Amoli; Ali Sadeghi Tarri; Khalil Hamzeh Doost; Naser Kamalian; Hedieh Moradi Tabriz
Volume 6, Issue 3 , June 2011, , Pages 124-132
Abstract
Background and Objectives: We aimed at evaluating the efficacy of fine needle aspiration biopsy (FNA) in comparison with histopathology and demonstrating whether cytological study could be a proper diagnostic tool in orbital mass lesions. Materials and Methods: In a cross sectional study during 36 months, ...
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Background and Objectives: We aimed at evaluating the efficacy of fine needle aspiration biopsy (FNA) in comparison with histopathology and demonstrating whether cytological study could be a proper diagnostic tool in orbital mass lesions. Materials and Methods: In a cross sectional study during 36 months, patients referred to our ophthalmologic center affiliated to Tehran University of Medical Sciences, for evaluation of orbital masses, were selected for FNA. After the surgery, the results of FNA were compared against histopathologic diagnoses as our gold standard method. Finally, the frequencies of specimen adequacy, the accuracy of FNA in distinguishing benign and malignant lesions and in the exact definitive diagnosis of the disorders were reported. Results: In 27.4% of the total 62 cases, the specimens were inadequate for cytologic evaluations. The rate of specimen adequacy in malignant and benign lesions was 82.6 % and 66.66%, respectively. From the morphologic point of view, the rate of the exact definitive diagnosis of malignant and benign disorders in the total 62 cases was 78.2% and 38.46% and; in the adequate specimens, it was 94.73% and 57.69%, respectively. There was no false positive FNA result for malignant cells and only in one malignant case, the FNA report was falsely negative. All data wee analyzed by SPSS software and p value Conclusion: FNA was considered more beneficial in the diagnosis of malignant lesions. FNA is a relatively noninvasive, rapid, specific, and accurate method for the preoperative primary diagnosis of orbital mass lesions and especially in malignant lesions and in some conditions, specific diagnoses can be achieved.
Hiva Saffar; Afsaneh Rajabiani; Naser Kamalian
Volume 6, Issue 1 , January 2011, , Pages 36-40
Abstract
Clear cell variant of ependymoma is almost exclusively located in the supratentorial region. Only few cases of this tumor that located in the spinal cord have been reported. Here we report one case of intramedullary clear cell ependymoma of the lumbar spinal cord. In microscopic examination, ...
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Clear cell variant of ependymoma is almost exclusively located in the supratentorial region. Only few cases of this tumor that located in the spinal cord have been reported. Here we report one case of intramedullary clear cell ependymoma of the lumbar spinal cord. In microscopic examination, the tumor cells were round to oval with moderate amounts of clear cytoplasm and centrally located large nuclei, resembling oligodendroglioma. Typical features of ependymoma, such as ependymal clefts, perivascular pseudorosettes, as well as nuclear pseudoinclusions and grooves were identified. Albeit being rare, clear cell ependymoma could be mentioned in differential diagnosis of clear cell tumors in this area.
