1999 Volume 53 Pages 79-82
A 52-year-old Japanese male was pointed out a Yamada IV type polypoid lesion at the first portion of duodenum with endoscopic examination for a health check, incidentally. And histologic examination revealed it was hyperplastic polyp. Subsequent endoscopic examinations were followed up periodically for 2 years, and still biopsies showed hyperplastic figure.
Adenomatous component in the lesion was found by the endoscopic biopsy on September 1997, so the lesion was resected by endoscopic snare polypectomy 5 months later without any complication. Resected specimen was 30×25×15mm in size, and it was composed of hyperplastic mucosa with adenomatous foci, histologically.
To date, only 23 cases of duodenal hyper plastic polyp with adenomatous foci have been reported, and cases resected by endoscopic snare polypectomy was rarely seen. Endoscopic snare polypectomy for duodenal polyp is considered as great significant method in diagnosis and therapeutic aspects because of obtaining of whole lesion. And it might be also expected low incidence of complication including after bleeding using this method. We reported a resected duodenal hyperplastic polyp with adenomatous foci case by endoscopic snare polypectomy.
