Paralysis of deep branch of the radial nerve caused by neurilemmoma: A case report.

概要

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A rare case of paralysis of deep branch of the radial nerve caused by neurilemmoma is reported. The patient was a man aged thirty, who noticed disability in extension of the right thumb and index finger with intact sensation. A palpable lump was present under the muscle mass of the brachioradialis and was thought to be the symptoms. Examination revealed no additional abnormalities except for electromyographical changes. During surgery two months after the onset, the tumor was seen to be arising from within the deep branch of the radial nerve just proximal to the arcade of Frohse, and there were funiculi stretched over its surface. These were dissected free without damage, allowing the tumor to be shelled out. Histologically the tumor was diagnosed as a neurilemmoma showing Antoni type A and type B pattern. Removal of the tumor enabled a slow recovery from his paralysis. Function was completely restored sixteen months after operation.
西日本整形・災害外科学会の論文