Irritative neuritis of the dorsal sensory branch of the ulnar nerve from underlying ganglion.
Although sites of ulnar nerve compression or disruption are generally apparent in a detailed physical examination, ulnar nerve involvement that is confined to the dorsal sensory branch of the ulnar nerve is unusual. Three patients presented with pain over the dorsal ulnar aspect of the hand associated with a cystic mass on the ulnar border of the wrist and hand. Stretching of the dorsal cutaneous branch from an underlying ganglion or proliferative synovium was present in all three of the patients.
D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D009408:Nerve Compression Syndromes / Q000150:complications / Q000209:etiology*; D009443:Neuritis / Q000209:etiology*; D013581:Synovial Cyst / Q000150:complications*; D014459:Ulnar Nerve; D014953:Wrist