A Case of Appendiceal Schwannoma

Omiya, Kojiro; Kamiya, Satoaki; Kawai, Satoru; Takagi, Kenji; Uno, Mayumi; Tomida, Akihiro

doi:10.3919/jjsa.78.78

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2019

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“…As a differential diagnosis, mesenchymal tumors such as leiomyoma, leiomyosarcoma, and GIST can be considered; however, it is difficult to distinguish these tumors by HE staining alone, and immunohistological staining is usually required. Schwannomas are typically positive for S-100 and vimentin, and negative for desmin, keratin, c-kit, CD34, and αSMA [7, 8, 9, 10].…”

Section: Discussion/conclusionmentioning

confidence: 99%

Schwannoma of the Small Intestine

Fukushima

Aoki

Fukazawa

et al. 2019

Case Rep Gastroenterol

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Schwannomas of the gastrointestinal tract are rare. Herein, we report a case of schwannoma originating from the small intestine. A 78-year-old woman underwent medical follow-up after surgery for bladder cancer, and a mass in the upper part of the pelvis was revealed by abdominal CT. With the diagnosis of a submucosal tumor of the small intestine, she underwent partial intestinal resection. The submucosal tumor was pathologically composed of S100-positive spindle cells and diagnosed as schwannoma. We report this case of rare schwannoma of the small intestine and review the literature.

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