[In vitro and first in vivo experiments for the dissolution of calcium-containing urinary calculi (author's transl)]

There are numerous reports dealing with the significantly reduced citrate secretion in (recurrent) tone formers. The critical values of the Ca/citrate ratio in the nocturnal urine of (oxalate) stone formers has also been reported, emphasizing the need of medicaments being capable to increase the citrate secretion and to raise the basal citrate level of the nocturnal urine in these patients. In our in vitro experiments, we tested quantitatively the inhibitory activity of some new substances on crystal growth. In Wistar rats we measured the Ca2+-binding capacity as well as the citrate and oxalate excretion before and after oral application of a great number of new compounds. Some of them were highly efficacious in the reduction of the Ca-oxalate activity product, as can be derived from the increased Ca2+-binding capacity and/or the decreased oxalate secretion in urine.

[Ulcerocancer of the stomach (author's transl)]

46 patients were operated upon for an ulcerocancer of the stomach. In detail the differential diagnosis and the possibilities for preoperatively establishing an exact diagnosis are described. The good results after resection of the tumor (5-year-survival rates are for early cancer 100% and for the other tumors 67.7%) demonstrate, that usually for the ulcerocancer a total gastrectomy is unnecessary. Depending on the localisation of the tumor a proximal or distal resection of the stomach is sufficient. The results indicate that tumors, in which the ulcer floor shows a partial infiltration of carcinomatous cells, are not to be called as ulcerocancer. It is suggested to speak of these cases of "primary" carcinoma of the stomach.

[Blocking of pancreatic exocrine function in the treatment of chronic pancreatitis (author's transl)]

In 6 patients with chronic pancreatitis the exocrine function was inhibited by occlusion of the pancreatic exocrine ducts leading to atrophy of the glands. The function of the pancreatic islets remained intact. This procedure can be combined to advantage with partial resections. Preliminary clinical results are promising and in all cases pancreatic pains disappeared immediately after the operation.

[The penetrating duodenal ulcer. Operative technique and postoperative complications (author's transl)]

The results of 133 gastric resections for penetrating duodenal ulcer are reported. Because of the postoperative complications (acute hemorrhagic pancreatitis, duodenal stump insufficiency, icterus and intraluminal postoperative bleeding) in future only the atypical closure of the duodenal stump according to the method of Nissen-Bsteh should be carried out. A bleeding ulcer should be operated within 48 hrs. If the bleeding needs more than 2500 ml blood substitute, this means a indication for a immediate operation.