We present an analysis of 400 intralobar and 133 extralobar sequestrations, six cases presenting intra-and extralobar sequestration simultaneously, five sequestrations of one whole lung, and two bilateral intralobar sequestrations.This anomaly comprises 0 15-6 4% of all congenital pulmonary malformations. Usually the posterior basal segment is affected.The aberrant artery in intralobar sequestration originated in 74% of all cases from the thoracic aorta, and in 14*8% there was more than one anomalous artery. The mean diameter of the aberrant arteries was 643-6 6 mm. Usually arteries with predominantly elastic fibres were found. Arteriosclerotic changes were common, even in children.

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In a series of 112 patients who had undergone a duodenopancreatectomy (48 carcinoma, 64 pancreatitis), there were 2 deaths (1 carcinoma, 1 pancreatitis). Including a continuous series of 95 cases without death, there were no failures observed in the anastomotic technique described. The fatal risk of a pancreatic leak can be avoided by broad plication with a Roux loop and integrated dorsal ductanastomosis. The function of duct anastomosis was proved to be patent by the presence of chymotrypsin in the stool of all 26 patients examined.

43 patients with complicated gastric, duodenal or anastomotic ulcers resected according to Billroth II-Roux were controlled clinically, by endoscopy and X-ray. Little amounts of bile acid were found in only one case. Two groups with different pH-values were verified: 6 patients with pH from 1.2 to 2.2; three of them had recurrent ulcers. In the other group of the remaining 37 patients pH was higher than 5.5; there was only one recurrence in a patient with HPT. According to the Visick grading system results were good or excellent in 86%. The study shows that under conditions of no bile reflux and maintained vagal stimulation recurrence of ulcer is probable. In the acid ulcer type (Johnson II and III), duodenal ulcer and anastomotic ulcer supplementary vagotomy is recommendable.

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