Five partial (intramural) gastric diverticula were observed in about 10,000 routine examinations of the stomach and confirmed by endoscopy or operation. All diverticula were located on the greater curvature of the antrum. A round or oval pouch with a small neck and typical changes in shape and size represent the diagnostic radiographic features of partial diverticulum. Complete filling of the diverticulum by administration of a spasmolytic and the use of the double-contrast method proved to be important for the correct diagnosis.

Between 1974 and 1978 we saw nine patients with acute gastro-duodenal ulcers. Morphologically these were characterised by their unusual extent without deep penetration, by sharp bizarre contours, and with symmetrical findings in the gastric antrum. Spasm and submucous inflammatory reactions may obscure the niche of an antral ulcer and lead to stenosis and rigidity; in the differential diagnosis an infiltrating carcinoma must be excluded. This is possible by double contrast demonstration of the ulcer en face. The clinical picture is one of sudden, severe upper abdominal pain with features of an acute abdomen, often with a previous history of stress or of gastric distension with vomiting.

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