title: Unusual case of thoracic outlet syndrome caused by a neurilemmoma in the pectoralis minor space.
abstract: A 34-year-old man presented with a 5-year history of paraesthesia of the right palm and the right middle and ring fingers. This paraesthesia was exacerbated by elevation of the right arm. A tumour was palpable in the subclavicular fossa. As magnetic resonance imaging (MRI) indicated a neurogenic tumour originating from the brachial plexus, a diagnosis of thoracic outlet syndrome caused by a neurilemmoma in the pectoralis minor space was made. Pathological examination showed the tumour to be a benign neurilemmoma. There have been only three previous case reports of neurilemmomas as causes of thoracic outlet syndrome worldwide, and this is the first report of a neurilemmoma originating from the lateral fascicles of the brachial plexus in the pectoralis minor space causing thoracic outlet syndrome.
authors.affiliation: Department of Plastic and Reconstructive Surgery, Tokyo Women's Medical University, Tokyo, Japan. nakazawa@prs.twmu.ac.jp
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Nakazawa
authors.forename: Shinichi
authors.initials: S
authors.lastname: Terada
authors.forename: Motohiro
authors.initials: M
authors.lastname: Nozaki
authors.forename: Yuji
authors.initials: Y
authors.lastname: Kikuchi
authors.forename: Takashi
authors.initials: T
authors.lastname: Honda
authors.forename: Tsukasa
authors.initials: T
authors.lastname: Isago
mesh_terms: D000328:Adult; D001707:Biopsy, Needle; D001917:Brachial Plexus; D005500:Follow-Up Studies; D006801:Humans; D007150:Immunohistochemistry; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D009442:Neurilemmoma / Q000473:pathology* / Q000601:surgery; D010369:Pectoralis Muscles; D010524:Peripheral Nervous System Neoplasms / Q000150:complications / Q000473:pathology* / Q000601:surgery; D035583:Rare Diseases; D018570:Risk Assessment; D013901:Thoracic Outlet Syndrome / Q000209:etiology* / Q000473:pathology / Q000601:surgery*; D016896:Treatment Outcome