Abstract
Conventional transanal excision as originally described by Parks has been used for the local excision of both benign and malignant lesions of the rectum. Radical resections for rectal lesions are associated with higher perioperative morbidity and mortality including sexual and urinary dysfunction. Despite references to transanal resection of lesions up to 12cm from the dentate line, transanal endoscopic techniques originally developed by Buess in the 1980s afford much better visualization of the upper and middle rectum. While transanal endoscopic surgery affords better specimen retrieval and possibly decreased recurrence and improved survival rates, the majority of lesions removed by transanal endoscopic surgical techniques are located in the middle and upper rectum. Conventional transanal excision may continue to be used for benign lesions in the lower rectum.
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