The dorsal ganglion with anomalous muscles.
Either an anomalous extensor indicis proprius muscle or an extensor digitorum brevis manus may coexist with a dorsal wrist ganglion. To assure relief of symptoms, treatment must include division of the fourth dorsal extensor compartment in the case of the former muscle, and excision in the case of the latter.
D000328:Adult; D006801:Humans; D008297:Male; D009132:Muscles / Q000002:abnormalities*; D013581:Synovial Cyst / Q000601:surgery*; D014953:Wrist / Q000601:surgery*