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Arch Neurol. 2006;63:781.

	Since this article does not have an abstract, we have provided the first 150 words of the full text and any section headings.

A 15-year-old girl described pain, reduced abduction, and external rotation of the left shoulder as well as intermittent paresthesia over the left scapula. She recalled no trauma, and the symptoms were exacerbated by exercise and abated with rest. On physical examination of the patient, we found a moderate lesion of the suprascapular nerve and moderate atrophy of the left infraspinatus muscle. Electromyographic examination revealed signs of a lesion that caused the neuropraxic state of the left suprascapular nerve, moderate axonal loss, and denervation of the left infraspinatus muscle. T2-weighted magnetic resonance imaging provided anatomical demonstration of nerve entrapment caused by a well-distinguished round structure next to the left incisura scapularis (Figure).¹ After surgical decompression and extirpation of the structure, histological analysis identified it as a ganglion cyst. Surgical decompression gave complete pain relief and full recovery of the shoulder function. It is known that sports involving overhead motions, . . . [Full Text of this Article]

AUTHOR INFORMATION

Frauke Knossalla, MD; Volkmar Nicolas, MD; Martin Tegenthoff, MD