Clinical Pain

Korean Association of Pain Medicine (대한임상통증학회)
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Tardy Ulnar Nerve Palsy by Neurofibroma

신경섬유종에 의한 지연성 척골신경 마비

  • Lee, Sang Chul (Department of Physical Medicine and Rehabilitation, Inje University Sanggye Paik Hospital) ;
  • Koh, Sung Hoon (Department of Physical Medicine and Rehabilitation, Inje University Sanggye Paik Hospital) ;
  • Kim, Chul (Department of Physical Medicine and Rehabilitation, Inje University Sanggye Paik Hospital)
  • 이상철 (인제대학교 상계백병원 재활의학과) ;
  • 고성훈 (인제대학교 상계백병원 재활의학과) ;
  • 김철 (인제대학교 상계백병원 재활의학과)
  • Received : 2019.02.19
  • Accepted : 2019.05.15
  • Published : 2019.12.31
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Abstract

Tardy ulnar nerve palsy is ulnar neuropathy at or around elbow and commonly evaluated in the electromyography laboratory. However, ulnar neuropathy at the elbow due to neurofibroma is rare. Neurofibromas are tumors that arise within nerve fasciculi and anywhere along a nerve from dorsal root ganglion to the terminal nerve branch. We report one case of ulnar neuropathy at the elbow due to neurofibroma. Patient had paresthesia on the left 5th finger and there had been left hypothenar atrophy since 2 months ago. Tinel's sign was positive at left elbow. As a result of electromyography, there were suggestive of right ulnar neuropathy at or around elbow, referred to as tardy ulnar nerve palsy. Ultrasonography showed a diffuse tortuous thickening with multiple neurofibromas arising from individual fascicles of the ulnar nerve in cubital tunnel area. Surgery was then performed to release cubital tunnel of left elbow, then the patient's symptoms improved.

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