[Two cases of cervical intradural arachnoid cysts simulating juvenile muscular atrophy of a unilateral upper extremity (Hirayama's disease)].
D000328:Adult; D001099:Arachnoid / Q000000981:diagnostic imaging; D003560:Cysts / Q000175:diagnosis*; D003937:Diagnosis, Differential; D006801:Humans; D008297:Male; D009133:Muscular Atrophy / Q000175:diagnosis*; D013116:Spinal Cord / Q000000981:diagnostic imaging; D013118:Spinal Cord Diseases / Q000175:diagnosis; D014057:Tomography, X-Ray Computed