[Duodenitis].

In 211 bulboscopies 108 normal findings, 29 duodenal ulcers, 44 cases of scar bulb, 4 times erosions of the bulb and 26 times a bulbitis alone (macroscopically) were found. The macroscopic findings duodenitis were confirmed histologically in 85%, the macroscopic findings normal bulbous mucous membrane only in 30% of the cases. In patients with the histological findings duodenitis the bulbous mucous membrane was endoscopically regarded as normal in 70% of the cases. Patients with duodenitis more frequently have an antrum gastritis and less frequently a corpus gastritis than a control group corresponding to age without any macroscopic changes at the stomach and duodenal bulb. On account of its clinico-therapeutic importance is referred to the fact to demarcate the peptic corrosive bulbitis (bulbitis with bulboscopically probable lesion) from the bulbitis without bulboscopic lesion.