(HealthDay)—There is a significant long-term risk of anastomotic ulceration (AU) after Roux-en-Y gastric bypass (RYGB), which increases over time and with history of tobacco use, according to a research letter published online June 20 in JAMA Surgery. Konstantinos Spaniolas, M.D., from Stony Brook University in New York, and colleagues describe the epidemiology of AU after