Zenker's diverticulum is a benign protrusion into the lumen of a hollow organ, covered with a serous membrane and containing mucus and liquid secretion. The most common Zenker's diverticulum is a pyloric diverticulum, that is, a diverticulum in the cardiac part of the esophagus.
The description of the discovery of Zenker's diverticulum belongs to two scientists - Samuel von Siebold from Germany and Hugo de Soto from Spain. In the 19th century, Siebold de Soto drew attention to the accidental discovery in their patients of a diverticulum-like formation located in the lower esophagus above the barium that had entered there during an X-ray examination. Later, they saw these same formations in the esophagus of several of their colleagues and students on gastroscopy.
Patients with diverticulum often experience a chronic cough due to the irritating effect of the contents of the diverticulum, as well as regurgitation or vomiting