Intussusception with incarceration of a cystadenoma of the appendix: Case report and review of the complications of appendiceal adenomas

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Fifty benign epithelial neoplasms were encountered during the examination of more than 30,000 appendectomy specimens in the Laboratory of Surgical Pathology, Columbia University. In 44 cases, the neoplasms were papillary cystadenomas; in 11 of these cases, there were complications, all thought to have been caused by abnormal accumulations of mucus. We have reported a unique case of an incarcerated intussusception, and attempted to explain the pathogenesis of this unusual complication. We have also summarized the existing medical literature on the subject of intussusception of adenomatous lesions of the appendix.

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