S状結腸癌術後吻合部に発生したimplantation cystの1例

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  • A Case of Implantation Cyst at Anastomosis in a Previous Sigmoidectomy for Cancer of the Sigmoid Colon.

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A 59-year-old man, who had undergone a sigmoidectomy for cancer of the sigmoid colon in 1993 and had no recurrence until February 2001, was found having a round tumor near the anastomosis on colonoscopy. Under a diagnosis of submucosal tumor or recurrence of colonic cancer, an operation was performed on March 29. A spherical and hard mass 2cm in diameter near the anastomosis was found. A partial colectomy including the tumor was performed. The tumor was submucosal cyst in which benign colonic mucosa lined the lumen of the cyst. The cyst was composed of concentrated mucus and barium. These features were compatible with those of implantation cyst.<br> Implantation cyst is rare, especially at the anastomosis in the previous operation and only two cases including this case have been reported in Japan.

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