Síndrome do desfiladeiro torácico tipo neurogênico verdadeiro: Relato de dois casos

Translated title of the contribution: True neurogenic thoracic outlet syndrome: Report of two cases

Rosana Herminia Scola, Lineu Cesar Werneck, Fabio Massaiti Iwamoto, Gustavo Henrique Maegawa, Leonardo Nercolini Faoro, Francisco H. Caldeira

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


True neurogenic thoracic outlet syndrome is caused by compression of the lower trunk of the brachial plexus usually by a cervical rib, fibrous hand or an elongated transverse process of C7. Wc describe two cases of female patients (23 and 19 years old) with pain in the right superior limb and progressive muscular weakness and atrophy of the intrinsic muscles of hand. Electrodiagnostic studies showed reduced amplitude of compound muscle action potential of median nerve and decreased amplitude of ulnar sensory nerve action potential. Motor and sensory nerve conduction velocities were normal in both patients. Needle electromyography were findings compatible with chronic denervation in the intrinsic muscles of the right hand of both patients. Radiological investigation showed cervical ribs in one case and elongated transverse process of C7 in the other. A discussion about the clinical and electrophysiological features and the treatment of the syndrome was performed.

Translated title of the contributionTrue neurogenic thoracic outlet syndrome: Report of two cases
Original languagePortuguese
Pages (from-to)659-665
Number of pages7
JournalArquivos de Neuro-Psiquiatria
Issue number3 A
StatePublished - Sep 1999
Externally publishedYes


  • Brachial plexus
  • Cervical rib syndrome
  • Electromyography
  • Neural conduction
  • Thoracic outlet syndrome

ASJC Scopus subject areas

  • Clinical Neurology
  • Biological Psychiatry


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