Ganglion causing paralysis of the suprascapular nerve. Diagnosis by MRI and ultrasonography.
A 26-year-old man had a right infraspinatus muscle weakness and aching of the shoulder due to suprascapular nerve entrapment confirmed by electromyography. MRI revealed a well-defined area of increased signal intensity over the suprascapular notch. An ultrasonogram showed a homogeneous hypoechogenic area at the base of the scapular spine. A diagnosis was made of a ganglion compressing the inferior branch of the suprascapular nerve. After removal of several ganglia, the patient had immediate pain relief, and normal electromyographic findings were obtained 5 months postoperatively.
Takagishi
K
K
Department of Orthopedics, School of Medicine, Kitasato University, Kanagawa, Japan.
Maeda
K
K
Ikeda
T
T
Itoman
M
M
Yamamoto
M
M
D000328:Adult; D003560:Cysts / Q000150:complications / Q000175:diagnosis* / Q000601:surgery; D004576:Electromyography; D005724:Ganglia; D015171:Ganglionectomy; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D009408:Nerve Compression Syndromes / Q000175:diagnosis / Q000209:etiology*; D012540:Scapula / Q000294:innervation*; D014463:Ultrasonography