Intraneural Nodular Fasciitis of the Median Nerve: Case Report and Literature Review

Nodular fasciitis, a benign soft tissue tumor, occurs most frequently in the forearm and is generally divided into subcutaneous, intramuscular, and fascial types. Intraneural nodular fasciitis has been reported in only 5 patients previously. We present the case of a 79-year-old woman with nodular fasciitis within the median nerve at the proximal forearm. Carpal tunnel syndrome was suspected at the initial visit, but high median nerve palsy and a mass at the proximal forearm were found a few months later. Subtotal resection of the tumor within the median nerve was performed and histological diagnosis indicated nodular fasciitis. There was no evidence of recurrence at follow-up 1 year and 3 months after surgery. Motor weakness had resolved but sensation was compromised.