Zenker diverticulum (ZD) is rare, with an unknown overall prevalence, given that many patients with ZD are likely asymptomatic.1 ZDs are pseudodiverticula that manifest as mucosal and submucosal pulsion through the Killian triangle. Postulated mechanisms include increased intraesophageal pressure at an area of weakness in the proximal esophageal wall and hypertensive upper-esophageal sphincter (ie, decreased compliance). ZD is frequently diagnosed by esophagography. Symptoms include dysphagia, regurgitation, and, in severe cases, weight loss and malnutrition.