Authors: Gupta Shruti, Poflee Sandhya, Pande Nandu, Umap Pradeep, Shrivastava Alok
Hibernoma is a rare benign neoplasm that shows differentiation towards brown fat. Most hibernomas occur in sites where brown fat persists beyond fetal life, however, they have been known to occur at many uncommon locations. We present a case of 45 year old female with history of painless, slow growing mass in the pubic region for last seven years, initially diagnosed as hibernoma on fine needle aspiration cytology. The diagnosis was later confirmed on histopathologic examination. The preoperative diagnosis of hibernoma can be difficult because its clinical, radiological & cytological features may overlap with those of other benign & malignant lipomatous tumours.
Keywords: Hibernoma, Brown fat, Fine needle aspiration cytology diagnosis