Schwannoma of the Duodenum Causing Melena.
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概要
- 論文の詳細を見る
A rare case of duodenal schwannoma is reported. A 69-year-old man was admitted for evaluation of melena. Endoscopy and hypotonic duodenography showed a submucosal tumor in the third part of the duodenum. Biopsy findings were suggestive of leiomyosarcoma, therefore pancreatoduodenectomy was performed. Hematoxylin-eosin staining of the resected specimen showed interlacing bundles of spindle-shaped cells with palisading nuclei. Immunohistochemical staining showed positivity for S-100 protein and neuron-specific enolase, but desmin was negative, thus a diagnosis of schwannoma was made. Schwannoma is often difficult to distinguish from leiomyogenic tumors by standard staining, but immunohistochemical staining proved useful in this case.(Internal Medicine 33: 621-623, 1994)
- 社団法人 日本内科学会の論文
著者
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JOH TAKASHI
The First Department of Internal Medicine, Nagoya City University Medical School
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YOKOYAMA YOSHIFUMI
The First Department of Internal Medicine, Nagoya City University Medical School
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TAKEUCHI Toshihiko
the First Department of Internal Medicine Nagoya City University Medical School
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Yokoyama Yoshifumi
The First Department Of Internal Medicine Nagoya City University Medical School
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Itoh Makoto
The Faculty Of Engineering Nagasaki University
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ENDOH Kazuo
The First Department of Internal Medicine, Nagoya City University Medical School
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SEND Kyoji
The First Department of Internal Medicine, Nagoya City University Medical School
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NAKAMURA Takaaki
The Section of Pathology, Nagoya City University Medical School
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