Resection of Retroperitoneal and Mediastinal Neurilemmomas from a Patient with Multiple Neurilemmomas

Isao Miyashiro, Toshimasa Tsujinaka, Sumihito Tamura, Hitoshi Shiozaki, Morito Monden, Takesada Mori

Department of Surgery II, Osaka University Medical School

A surgically treated case of large neurilemmomas arising in the retroperitoneum and the mediastinum was reported. A 46-year-old man with no particular familial background had received operations for multiple neurilemmomas of the acoustic nerve and the spinal cord. Large mediastinal and retroperitoneal tumors were found at the time of previous neurosurgery. Because of the gigantic size of the tumors and a suspicion of malignancy, he was admitted for surgery in our department. Combined the 6th right intercostal thoracotomy and wide transverse laparotomy were employed for surgical resection. The resultant good surgical field guaranteed non-troubled resection of the large tumors. The total weight of these tumors was 1800 g and their histological diagnosis was neurilemmoma. Multiple neurilemmoma is rare and should be distinguished from von Recklinghausen's disease. Nevertheless, our case was diagnosed as multiple neurilemmoma because of the lack of cafe-au-lait-spots, skin tumors, and visceral organ involvement.

Key words
multiple neurilemmoma, neurilemmomatosis, large mediastinal and retroperitoneal tumors

Reprint requests
Isao Miyashiro Department of Surgery II, Osaka University Medical School
2-2 Yamadaoka, Suita-city, 565 JAPAN

Accepted
December 8, 1993

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