TWO CASES OF SCHWANNOMA OF THE DUODENUM
| Autor: | Ryo Yoriki, Akihiko Watanabe, Yoshiko Kusumoto, Saburo Sado, Takashi Yamada, Yoshikazu Tsurui, Masayuki Nakagawa |
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| Rok vydání: | 2000 |
| Předmět: | |
| Zdroj: | Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association). 61:1213-1216 |
| ISSN: | 1882-5133 1345-2843 |
| Popis: | Case 1. A61-year-old woman who had been followed up with cryptgenic back pain at the department of internal medicine in our hospital for about 3 years, was pointed out having a retroperitoneal tumor by computed tomography. She was referred to the department and was operated on with a diagnosis of retoroperitoneal tumor or submucosal tumor of the duodenum. During surgery, a submucosal tumor was found in the third portion of the duodenum. A partial resection of the duodenum. Case 2. An asymptomatic 70-year-old woman was detected to have a mass in the upper abdomen at a routine medical check up. She was referred to the department and under a diagnosis similar to Case 1, an operation was performed in the same manner. The resected specimens in both cases were covered with a fibrous capsule, and the insides of tumors were white in color, homogeneous, and elastic hard. Microscopically, the tumors were composed of bundles of spindle cells with their nuclei arranged in palsade, and mitosis was scarcely observed. In an immunohistochemical study, the tumors were positive for S-100 protein and NSE but negative for SMA and desmin. These cases were diagnosed as benign schwannoma. We report the two cases of schwannoma of the duodenum which is rare, together with some bibliographical comments. |
| Databáze: | OpenAIRE |
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