Lipofibromatous hamartoma of the superficial peroneal nerve: Two case reports

Abstract

Lipofibromatous hamartoma, a rarely occurring nerve hamartoma, can present as an acrochordon, cutaneous cyst or other soft tissue tumor and is usually seen within the first three decades of life. The lesion presents as a slowly growing mass that is largely composed of fat and fibrous tissue with epineural and perineural proliferation. Although such tumors are rare, it is important for physicians to be aware of this disorder and recognize its signs because patients may present with what appears to be a benign skin tumor. If left untreated, the lesion may result in nerve compression and eventually lead to the development of peripheral neuropathy. Here, we present two cases of lipofibromatous hamartomas that presented over the ankle and dorsal foot, respectively, that appeared as simple and benign tumors upon initial inspection. Patients were without symptoms or neurological deficits, and diagnosis was not made until histopathological examination of the biopsied specimens. We also discuss the clinical manifestations, histopathological findings, and the management of lipofibromatous hamartomas.

Keywords

• lipofibromatous hamartoma
• neural fibrolipoma
• superficial peroneal nerve
• radial nerve