Malignant Schwannoma.
D002467:Cell Nucleus / Q000473:pathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D009133:Muscular Atrophy; D009442:Neurilemmoma / Q000473:pathology*; D010524:Peripheral Nervous System Neoplasms / Q000473:pathology*; D014459:Ulnar Nerve / Q000473:pathology*