Giant laterally spreading tumors of the papilla: endoscopic features, resection technique, and outcome (with videos)

Abstract

Successful endoscopic treatment of conventional papillary adenomas is well described. However, many authors recommend surgical resection for larger lesions with extrapapillary extension. To describe the classification, technique, and outcome for the endoscopic resection of giant laterally spreading tumors of the papilla (LST-P). Single-center case series. Tertiary referral academic gastroenterology unit. Patients referred for endoscopic treatment of LST-P. Pre-resection staging and single-session endoscopic removal of papillary adenomas. For those classified as LST-P (>30 mm, extending beyond the papilla onto the duodenal wall and involving as much as two thirds of the duodenal circumference), a standardized single-session EMR technique was used. Technical success, complications, and adenoma recurrence for single-session removal of LST-P. Outcomes were compared with those of conventional ampullary adenoma resection during the same period. Twenty-five patients with ampullary adenomas were referred. In 10 patients identified with LST-P (mean age 70.2 years; adenoma size 30-80 mm), combination EMR and papillectomy was performed in a single session. The median admission duration was 1 night (range 0-35). Complications included bleeding (30%) and cholecystitis (10%), with no cases of pancreatitis or perforation. Adenoma recurrence at 3 months was found in 1 patient (10%). Complication and recurrence rates in smaller (<30 mm) ampullary adenoma resections were not significantly different. A relatively uncommon entity and thus small sample size. Endoscopic resection of carefully staged LST-P is a viable therapeutic alternative to surgery. In experienced hands, the outcomes are comparable to those for conventional ampullary adenomas.