The illusion of severe carpal tunnel syndrome (CTS).

ABSTRACT

Thenar atrophy occurs in patients with severe carpal tunnel syndrome (CTS) of long-standing duration. In this report we present a young woman with mild bilateral CTS, based on electrophysiological studies, in whom marked thenar atrophy was on a congenital basis related to the VATER association (vertebral anomalies, anal atresia, tracheoesophageal fistula, and radial or renal abnormalities).