Removal of large sessile polyp involving the appendiceal orifice.Removal of large sessile polyp involving the appendiceal orifice. (a) Large sessile polyp at the cecal pole. (b) Injection of epinephrine (1 : 20 000) lifts the lesion from the muscle layer and allows for easier and safer ensnaring. (c) The appendiceal orifice is visible after piecemeal resection. (d) APC is performed to remove the remaining adenomatous tissue at the appendiceal orifice.
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This image is taken from Colonoscopy, Chapter 4, Difficult polypectomy
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