Abstract
John F. Valentine, MD The double-channel endoscopic technique is an effective means of removal of large pedunculated polyps that is suitable for excision of polyps that cannot be removed by standard endoscopic techniques. The removal of large pedunculated polyps may be technically difficult in a tortuous sigmoid colon. The procedure may become more challenging because of the size of the polyp, thus making it difficult to get a standard elliptical or hexagonal snare over the head of the polyp. The large polyp on a long stalk adds further difficulty as the polyp may move relatively freely within the lumen, again making it From the University of Florida, Department of Medicine and the Gainesville Veterans Administration Medical Center, Gainesville, Florida.
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