TY - JOUR ID - 28322 TI - Intramuscular Hibernoma of the Scapular Region Misdiagnosed on Cytology as a Malignant Lesion: A Report of a Rare Case JO - Iranian Journal of Pathology JA - IJP LA - en SN - 1735-5303 AU - Pujani, Mukta AU - Khan, Sabina AU - Jetley, Sujata AU - Raina, Prabhat Kumar AU - Jetley, Sujata AD - Department of Pathology, ESIC Medical College, Faridabad, India AD - Department of Pathology, Hamdard Institute of Medical Sciences & Research, Jamia Hamdard, New Delhi, India AD - Dr. Prabhat Kumar Raina, MBBS, MS (Surgery) Previously Assistant Professor, Department of Surgery, Hamdard Institute of Medical Sciences and Research, Jamia Hamdard, New Delhi AD - Department of Oncosurgery, RJSP Cancer Hospital, Ranchi, India Y1 - 2017 PY - 2017 VL - 12 IS - 4 SP - 406 EP - 409 KW - Hibernoma KW - benign lipomatous tumor KW - brown fat KW - intramuscular hibernoma KW - scapular DO - 10.30699/ijp.2017.28322 N2 - Hibernomas are extremely rare benign tumors of adipose tissue characterized by an admixture of brown fat cells with granular, multivacuolated cytoplasm and white fat cells. Hibernomas account for 1.6% of benign adipose tissue tumors and approximately 1.1% of all adipocytic tumors. Around 10% of these cases are intramuscular. It was initially described in the early 1900s as being composed of brown fat. Hibernomas usually occur in third to fourth decades of life and the most frequent sites being thigh, trunk, shoulder, back etc. Cytological differential diagnoses of hibernoma include well differentiated liposarcoma, myxoid/round cell liposarcoma, chondroid lipoma and benign granular cell tumor.  Due to its abundant vascularity evident on angiography, it can sometimes mimic a malignant lesion, from which it needs to be distinguished as complete surgical excision is the only treatment required for a hibernoma. Moreover, it has no malignant or metastatic potential. We presented a rare case of intramuscular hibernoma of the scapular region in a 34-year-old male, in which cytology was reported as pleomorphic fibrolipomatous malignant lesion. UR - https://ijp.iranpath.org/article_28322.html L1 - https://ijp.iranpath.org/article_28322_b353cc25e87f1b0df12f179026b30581.pdf ER -