Complete appendiceal intussusception induced by primary appendiceal adenocarcinoma in tubular adenoma: A case report

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Abstract

A case of complete intussusception induced by appendiceal carcinoma is reported. The patient was a 49-year-old man complaining of rectal bleeding. Barium enema and colonoscopy revealed a cecal polyp; it was interpreted as an inverted appendix with a tumor. Computed tomography showed an invaginated appendix into the cecal cavity. During surgery, the appendix was found to be inverted completely into the cecum; ileocecal resection with regional lymph node dissection was performed. Microscopic examination revealed well-differentiated adenocarcinoma in tubular adenoma. Diagnosis of intussusception with carcinoma of the appendix is often difficult because appendiceal carcinoma with intussusception of the appendix is a rare condition. Although this condition can be diagnosed by radiographic imaging or colonoscopy, computed tomography has also been useful. The clinical manifestation of appendiceal intussusception with primary appendiceal tumor resembles a large cecal polyp, but its treatment differs greatly. Failure to recognize this condition may result in unexpected complications such as consequent peritonitis in case of endoscopic removal. © 2003 Foundation for Promotion of Cancer Research.

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APA

Takahashi, M., Sawada, T., Fukuda, T., Furugori, T., & Kuwano, H. (2003). Complete appendiceal intussusception induced by primary appendiceal adenocarcinoma in tubular adenoma: A case report. Japanese Journal of Clinical Oncology, 33(8), 413–415. https://doi.org/10.1093/jjco/hyg076

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