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Abstract

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Article in Japanese

Case Report

Schwannoma originating from a mediastinal vagal nerve resected by video-assisted thoracic surgery: a case report

Masamichi Takagi1)  Tadashi Akiba2) 

1)Department of Respiratory Medicine 2)Department of Surgery, Jikei University Kashiwa Hospital

ABSTRACT

A 63-year-old man was referred to our hospital due to an abnormal shadow found on a chest CT scan. The CT scan showed a cystic tumor with a central high density in the right upper mediastinal area. The preoperative diagnosis was teratoma in the right upper mediastinal area. Video-assisted thoracic surgery was performed. The tumor was about 3 cm in size and originated from the right vagal nerve. Microscopic findings of the resected specimen showed loose growth of spindle cells, in which a myxomatous framework was observed in the peripheral area as well as extended vessels, with thrombis, Verocay bodies, and a nuclear palisading pattern confirmed in the central area. The histological diagnosis was schwannoma originating from the mediastinal vagal nerve. This case was thought to be rare and difficult to diagnose by preoperative imaging findings. Postoperative hoarseness due to dysfunction of the right recurrent nerve occurred. Careful consideration should be given to the indication of video-assisted thoracic surgery for neurogenic mediastinal tumors since postoperative dysfunction may occur.

KEYWORDS

Video assisted thoracic surgery  Vagal nerve  Schwannoma 

Received 平成18年11月13日

JJRS, 45(6): 499-502, 2007

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