[The site of recurrent ulcer following stomach surgery (Billroth I and II)].

In 69 patients with recidivation ulcer after an operation of the stomach (51 times Billroth II and 18 times Billroth I) was investigated whether or not there are differences in the localisation of an ulcer. In patients operated on according to Billroth II ulcers of the anastomoses are dominating, whereas in patients operated on according to Billroth I the majority of ulcers is to be found in the residual stomach. The causes for the deviating distribution pattern are not unequivocal.

[Rate of recurrence of duodenal ulcer in smokers and nonsmokers].

In 70 patients (35 non-smokers and smokers each) with an endoscopically established duodenal ulcer the number of recidivations was investigated. In this case in the group of smokers an inclination to recidivations was found which was nearly double the size. Patients with a great consumption of nicotine per day were particularly affected.

[Therapy of diarrhea in diabetic enteropathy with clonidine].

The syndrome of neuropathy belongs to the frequent complications of diabetes. Within a visceral neuropathy a diabetic enteropathy may appear, in which cases diarrhoeas and incontinence stand to the fore. The therapy of the symptoms and signs is often difficult.

[Spontaneous perforation of the esophagus (Boerhaave syndrome)].

It is reported on 2 patients with spontaneous perforation of the oesophagus (Boerhaave's syndrome). The picture of the disease is rare. Possible causes, symptomatology, diagnosis, differential diagnosis and therapy are described.