Parosteal Lipomas of the Right Femur- A Case Report

Abstract

BACKGROUND Parosteal lipoma is an extremely rare benign tumour accounting for 0.3% of all lipomas. They are composed mainly of mature adipose tissue with a bony component. Parosteal lipomas often induce a periosteal reaction. The most frequently affected sites are the diaphysis and metaphyseal regions of long bones. They are usually asymptomatic and affecting mainly adults aged over 40. We are presenting a 47-year-old gentleman who presented to us with complaints of an asymptomatic swelling over his right thigh gradually progressive in size. On evaluation, he was diagnosed to have a 12 x 8 x 6 cm sized parosteal lipoma arising from the right femur. He underwent excision of the lipoma. Postoperative period was uneventful.

Rare presentation of hibernoma as a cystic swelling

“…About 2% of people are affected with lipoma. [ 1 ] Hibernomas are nonmalignant lipomatous tumors, a slow growing and painless with prevalence of 1.6% of all lipomatous tumors. [ 2 ] Brown fat is abundant in newborns.…”