Multiple neurilemomas in the upper extremity: a series of three cases

Neurilemomas are the most frequently arising benign nerve tumors of the upper extremity and are also called Schwannomas. Generally, they present as solitary tumors, although multiple tumors are common. Regardless of number, they are usually found on the lexor surface of the forearm and hand, and multiple tumors are almost always located within a single major nerve, its branches, or both. We present three patients who had multiple neurilemomas; two patients had tumors within a single major nerve and its branches, and the third patient had an unusual occurrence of one tumor in the ulnar nerve and a second tumor in a branch of the median nerve.