Giant lipomas of the hand and forearm.

Giant lipomas of the upper extremity are infrequently reported. They can alter function by restricting motion or producing compressive neuropathies. This report of four cases of giant lipoma in the hand and forearm illustrates these functional losses. The role of MRI and CT in preoperative evaluation of these lesions is discussed and a report of an anterior interosseous syndrome caused by a giant lipoma is presented.