Doppelganger solitary pedunculated tumours in pelvic girdle of obese females: Histopathological study of three cases.

Abstract

Pedunculated tumours are soft, compressible skin-coloured solitary lesions, predominantly occurring on buttocks and thighs that need to be categorized rightly. We describe three solitary pedunculated masses of the pelvic girdle encountered in obese females. Primary clinical differential diagnoses included fibroepithelial polyps, lipoma, papilloma and nevus lipomatosus superficialis. Histopathological features helped in narrowing down definitive diagnosis of these look alike lesions as pedunculated lipofibroma or solitary form of Nevus Lipomatosus Cutaneous Superficialis (NCLS) which is a broad-based lesion with aggregates of mature adipocytes extending into the dermis and Fibroepithelial polyp which displays loose dermal fibrocollagenous stroma with entrapped blood vessels in the absence of admixed adipose tissue. Though treatment of choice for these lesions is excision, it would be of interest for pathologists to be acquainted with these clinical mimics displaying divergent histology. Keywords: Adipocytes, Nevus, Pelvis, Polyps