Impact of 5-Year Endoscopic Surveillance Intervals with Biopsy following Endoscopic Papillectomy for Ampullary Adenoma

Background: Endoscopic snare papillectomy (ESP) has been established as a safe and effective treatment for ampullary adenomas. However, little is known about the optimal post-procedure follow-up period and the role of routine endoscopic surveillance biopsy following ESP. We aimed to evaluate patient adherence to a 5-year endoscopic surveillance and routine biopsy protocol after ESP of ampullary adenoma. Methods: We reviewed our prospectively collected database (n = 98), all members of which underwent ESP for ampullary lesions from January 2011 to December 2016, for the evaluation of long-term outcomes. The primary outcome was the rate of patient adherence to 5-year endoscopic surveillance following ESP. The secondary outcomes were the diagnostic yield of routine endoscopic biopsy, recurrence rate, and adverse events after endoscopic surveillance in the 5-year follow-up (3-month, 6-month, and every 1 year). Results: A total of 19 patients (19.4%) experienced recurrence during follow-up, all of these patients experienced recurrence within 3 years of the procedure (median 217 days, range 69–1083). The adherence rate for patients with sporadic ampullary adenoma were 100%, 93.5%, and 33.6% at 1, 3, and 5 years after ESP, respectively. The diagnostic yield of routine endoscopic biopsy without macroscopic abnormality was 0.54%. Pancreatitis occurred in four patients (4%, 3 mild, 1 moderate) after surveillance endoscopic biopsy without macroscopic abnormality. Conclusions: Given the low 5-year adherence rate and diagnostic yield of routine endoscopic biopsy with risk of pancreatitis, optimal surveillance intervals according to risk stratification (low grade vs. high grade adenoma/intramucosal adenocarcinoma) may be required to improve patient adherence, and routine biopsy without macroscopic abnormality may not be recommended.

Prevention of complications of transpapillary endoscopic interventions

This study analyzed the treatment results of 345 patients who underwent planned and emergency transpapillary surgical interventions for various diseases of the biliopancreatoduodenal region. Among these patients, 68.9% were women and 31.1% were men aged 1892 (mean age, 63.7 4.5) years. The study included patients who used various types of transpapillary endoscopic interventions as a treatment method, such as endoscopic papillo-sphincterotomy (71.9%, including choledocholite extraction in 68.7% of the patients), endoprosthetics of the common bile duct and main pancreatic duct (17.8%), balloon dilatation and bougienage of bile duct strictures (6.2%), mechanical lithotripsy (2%), nasobiliary drainage (1%), endoscopic wirsungotomy (0.8%), and endoscopic papillectomy (0.3%). Variants of the inflow of hepaticoholedochus and Wirsung duct were assessed using magnetic resonance cholangiopancreatography. The active implementation of preventive measures regulated by the global community made it possible to reduce the overall incidence of complications of transpapillary interventions to 13.1% and the rates of postoperative mortality to 1.3% (p 0.05). The use of these measures led to a significant decrease in the incidence of acute post-manipulation pancreatitis from 10.3% to 4.8%, postoperative bleeding from 8.9% to 5.5%, cholangitis from 2.8% to 0.7%, and a low incidence of retroduodenal perforation in 1.1%. Personalized consideration of the modern recommendations of the global endoscopic communities (Europeans, Americans, and Japanese) when performing endoscopic retrograde cholangiopancreatography, as well as original approaches associated with the determination of the anatomical features of the structure of the Vater papilla with variants of fusion of hepaticocholedochus and Wirsung duct, helped to significantly reduce the overall incidence of complications following transpapillary endoscopic procedures from 22.2% to 13.1%.