The most outstanding complication after surgical treatment of a gastroduodenal ulcer centers around the problem of postoperative peptic jejunal ulcer. At the present time theobjectof surgical treatment is to decrease the acidity of gastric secretion, resection of a large area including the pyloric antrum. In general the function of the fundus glands are thought to be important.
After an exclusion operation if the mucosa of the antrum is left, even if a recurrent ulcer doesn't develop, the patient has many different complaints.
On the other hand if we should exclude chronic gastritis from the so-called disease of “the ulcer case without ulcer”, good results are obtained by resection of a smaller area of the pyloric antrum. we therefore believe that the antrum is not only the factorto the: gastric phase but also has a function not yet known.
In order to make this clear we studied “the nicer case without ulcer” and made experiment on animales and the following conclusions were made.
1) When the exclusion operation is perforemed the problem is the pylorus and the anal part of the pyloric antrum. If a small area is resected the remaining oral part of the antrum becomes a problem. Experimentally if nhe pyloursand half of the anal portion of the antrum is left a peptic ulcer appears and leaves many different malformations and therefore becomes a complicated condition.
2) This unpleasant result occuring after the exclusion operation is caused because of the function of the remaining anal part of the pyloric antrum, and this bad result can not be erased by resection of a large area.
3) When chronic gastritis is excluded from the so-called “the ulcer case without ulcer” there are many cases which may advance and become ulcerous. This is caused by a disfunction of the pyloric antrum.
4) The pyloric antrum not only serves as a gastrin phase when irritated but has a specific function. We found that this is especially clear in the anal part of the pyloric antrum. Therefore we believe that itis important to resect the pylorus even in exclusion operations.

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