Oesophageal intramural pseudodiverticulosis--always benign?

Oesophageal intramural pseudodiverticulosis is a rare condition that presents with dysphagia. The diagnosis is usually not apparent endoscopically and careful radiological evaluation is required. Previous reports suggest a benign course with good response of dysphagia to oesophageal dilatation and complications have not been described. Two cases are reported, one in whom life threatening haemorrhage developed following dilatation, and one complicated by a retro-oesophageal collection. It is possible that oesophageal intramural pseudodiverticulosis results in an increased propensity to trauma and even perforation.