Rectal Carcinoid with Scyphoid Form, Report of a Case Shohei Uraoka 1 , Hiroyuki Kobayashi 1 , Yumi Oshiro 2 , Yuji Sakai 1 , Hideya Oda 1 , Koichi Kurahara 1 , Shuro Yoshino 1 , Takashi Watanabe 1 , Kenshi Sunahara 1 , Tadahiko Fuchigami 1 1Institute of Gastroenterology, Matsuyama Red Cross Hospital, Matsuyama, Japan 2Department of Pathology, Matsuyama Red Cross Hospital, Matsuyama, Japan Keyword: 直腸カルチノイド , 杯状形態 , 診断 , 治療 pp.1537-1542
Published Date 2007/9/25
DOI https://doi.org/10.11477/mf.1403101201
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 A 43-year-old woman visited our hospital with a complaint of hematochezia, and was found to have a polypoid lesion in the lower rectum. Radiography and colonoscopy showed a subpedunculated submucosal tumor, measuring 18mm in diameter, with a wide and deep depression on its surface. The lesion was diagnosed as carcinoid by histology of the biopsy specimen. At first, local transanal resection was performed in accordance with the will of the patient. Histological examination of the resected specimen revealed a possibility of positive margin(<500μm), mitotic index 2/10 HPF, Ki-67 labeling index about 3%, and lymphatic invasion. Low anterior resection was added, and lymph node metastases were recognized. This case was considered a relatively atypical case of rectal carcinoid with scyphoid form.

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