[Thenar lipoma causing nervous compression. A case report].

The authors report the case of a thenar lipoma in a 40-year-old women, associated with altered sensation in the territory of the adjacent digital nerves of the thumb and index. Magnetic resonance imaging proved useful in the establishment of the diagnosis and for pre-operative planning. Treatment consisted of excision of the tumor. At twelve months postoperatively, the patient had complete return of sensation and no sign of tumour recurrence.