| Zenker's diverticulum | <pathology> Herniation of the mucosa of the oesophagus through a defect in the wall of the oesophagus. The location is usually in the upper one-third of the oesophagus. (12 Nov 1997) |
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| Kommerell's diverticulum | The diverticulum at the origin of some aberrant right subclavian arteries resulting from incomplete arch agenesis. (05 Mar 2000) |
| urethral diverticulum | A sac-like outpouching of the urethral wall, either from a congenital defect or, more commonly, as a result of chronic penetrating inflammation. (05 Mar 2000) |