[Oesophageal stricture caused by lichen planus and intramural pseudo-diverticulosis].

We present the rare case of a proximal oesophageal stricture caused by a combination of oesophageal lichen planus without any other manifestations and intramural pseudo-diverticulosis, resulting in significant dysphagia. The diagnosis was not reached until a second set of biopsies were performed after split-dose treatment with proton pump inhibitors. Although local corticosteroid treatment was unsuccessful and symptomatic relief was only achieved after endoscopic dilatation, this case emphasizes the importance of adequate biopsies in the diagnosis of oesophageal strictures.