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Deep branch ulnar neuropathy due to giant cell tumor: report of a case
J C Rafecas1, J R Daube, R L Ehman
1Department of Neurology, Mayo Clinic, Rochester, MN 55905.
Neurology
|February 1, 1988
Abstract:
Electrophysiologic studies indicated a lesion of the deep branch of the ulnar nerve in the palm of a 42-year-old man with painless weakness and wasting of ulnar-innervated intrinsic hand muscles. Magnetic resonance imaging of this region demonstrated a soft-tissue mass in the palm distal to Guyon's canal. Surgical exploration disclosed a giant cell tumor of the tendon sheath, compressing the deep branch of the ulnar nerve.