Parietal peri-neural lipoma: a case report

Abstract

Background: Perineural lipoma, also known as fibro-fatty overgrowth, fibrolipomatous hamartoma, intraneural lipoma, and lipomatous hamartoma, is a rare, benign, congenital lesion most commonly found in the median nerve, usually at the level of the wrist or hand. To our knowledge, no published cases report a perineural lipoma arising from the intercostal nerve.Case presentation: We report a case of a perineural lipoma in a 55-year-old man which was totally resected. The diagnosis was based on microscopic examination which showed a benign fatty tumor composed of mature fat cells interspersed with fibrofatty connective tissue. This tumor surrounded numerous hyperplastic nerve bundles.Discussion: Perineural lipoma is a benign condition with non-specific symptoms. In fact, they depend on the concerned nerve. Surgical resection seems to be necessary only in symptomatic patients because of its high morbidity.