A Case of Transverse Colon Schwannoma.

Itoh, Seiji; Matsumoto, Hiromu; Kogure, Hiroaki; A, Sagiya; Ohyama, Wakako; Kaneko, Yasuhiko

doi:10.3862/jcoloproctology.49.139

Cited by 3 publications

(3 citation statements)

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“…In 1996, Ito et al 1 reviewed 37 cases of schwannoma of the large intestine reported in Japan. Three further cases have since been reported in Japan.…”

Section: Discussionmentioning

confidence: 98%

A schwannoma of the cecum: Case report and review of Japanese schwannomas in the large intestine

Tomozawa

Terabe

Matsuda

et al. 1998

Journal of Gastroenterology

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A 66-year-old Japanese man had a positive fecal occult blood test at a regular check-up, and a large polypoid mass was detected in the cecum by barium enema study. Colonoscopy showed a submucosal tumor with ulcer protruding into the cecal lumen. A large-forceps biopsy specimen was taken from the bottom of the ulcer. With the tentative diagnosis of neurogenic tumor, ileocecal resection was performed. The tumor showed spindle-cell proliferation in a concentric or fascicular pattern. Immunohistochemically, the tumor cells were diffusely positive for S-100 protein, and they had intracytoplasmic periodic acid Schiff (PAS)-positive crystalloids. The mitosis count was low (about 1 per 20 high-power fields). The pathological diagnosis of this tumor was benign gastrointestinal schwannoma. A large number of schwannoma cases have been reported since 1910 when Verocay reported it as a true tumor that stemmed from Schwann cells and did not contain neuroganglion cells. However, gastrointestinal schwannomas are rare, and schwannomas of the large intestine are extremely rare. We reviewed 40 cases already reported in Japan and this present case in order to clarify the clinicopathological features of this tumor.

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“…In 1996, Ito et al 1 reviewed 37 cases of schwannoma of the large intestine reported in Japan. Three further cases have since been reported in Japan.…”

Section: Discussionmentioning

confidence: 98%

A schwannoma of the cecum: Case report and review of Japanese schwannomas in the large intestine

Tomozawa

Terabe

Matsuda

et al. 1998

Journal of Gastroenterology

View full text Add to dashboard Cite

show abstract

“…Barium enema with colonoscopy usually reveal a submucosal tumor. Only 8 cases were correctly diagnosed before operation [12,14]. Diagnosis must differentiate the schwannoma from the leiomyoma and the leiomyosarcoma.…”

Section: Discussionmentioning

confidence: 99%

“…The male to female ratio was 1:1. Among the 52 tumors, 28 were rectal schwannomas, 20 were colon schwannomas (3 caecal, 3 ascending, 6 transversal, 4 descending and 4 sigmoid colon schwannomas), 3 were appendical schwannomas and the site was unreported in one case [13,14].…”

Section: Discussionmentioning

confidence: 99%