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KMID : 0614620210770020084
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Korean Journal of Gastroenterology
2021 Volume.77 No. 2 p.84 ~ p.87
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Cap-assisted Endoscopic Mucosal Resection of Rectal Perineurioma Mimicking a Neuroendocrine Tumor
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Lee Dong-Geon
Lee Jin
Kim Bo-Mi
Jeong Su-Jin
Oh Eun-Hye
Park Yong-Eun
Park Jong-Ha
Kim Tae-Oh
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Abstract
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Colorectal perineuriomas are benign mucosal-based mesenchymal tumors composed of perineurial cells and show serrated or hyperplastic crypts in epithelium on histopathological evaluation. Most perineuriomas are usually presented as sessile polyps and often as subepithelial tumors. In this case, colonoscopy revealed a rectal subepithelial tumor (measuring approximately 7 mm) with yellowish- colored normal mucosa. A rectal neuroendocrine tumor was suspected, and cap-assisted endoscopic mucosal resection was performed. Histopathological examination of the resected specimen revealed bland spindle cells showing immunopositivity for CD34. The patient was finally diagnosed with rectal perineurioma.
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KEYWORD
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Rectal neoplasms, Neuroendocrine tumors, Endoscopic mucosal resection
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