Pancreozymin in man as in animals appears to act as a specific enzyme stimulant. The preparations of pancreozymin used in these experiments also contain cholecystokinin, which causes the gall bladder to contract, and a smooth muscle stimulant, possibly substance P.The (Lagerlof, 1939(Lagerlof, , 1942 Diamond, Siegel, Gall, and Karlen, 1939;Diamond andSiegel, 1940, 1941;Comfort and Osterberg, 1940;Pratt, Brugsch, and Rostler, 1940;Pollard, Miller, and Brewer, 1942;Lake, 1947;Dornberger, Comfort, Wollaeger, and Power, 1948;Dreiling and Hollander, 1948, 1950;Friedman and Snape, 1950;Dreiling, 1950Dreiling, , 1951Dreiling, , 1953Dreiling, , 1955 Dreiling and Janowitz, 1957;Wenger and Raskin, 1958).In anaesthetized animals secretin produced a large volume of pancreatic juice of constant alkalinity and low enzyme content. Harper and Raper (1943) isolated from the small intestine a second material, other than secretin, which increased the enzyme output by the pancreas without affecting the volume of juice. This material they named pancreozymin. Crick, Harper, and Raper (1949) later published a revised method of preparing secretin and pancreozymin and preliminary experiments showed that pancreozymin had the same effect on man as in animals

Summary Three cases of intramural pseudodiverticulosis of the oesophagus are described together with a review of the relevant literature. This unusual condition, diagnosed by characteristic features on the barium swallow, is associated with a high incidence of benign oesophageal stricture which responds readily to endoscopic dilatation.

Case 2.-Female aged 23 years. Iprindole prescribed for postinfluenzal depression. Hb and E.S.R. normal. Eight days after first taking the drug suddenly developed pain in the right hypochondrium and right posterior chest with transient fever (temperature taken by the patient and found to be 101'F. (38-3'C.)). When seen on the tenth day, apyrexial, marked tenderness present in the right hypochondrium, definite clinical jaundice. Urine strongly positive for bile.

Summary A case is described of adult coeliac disease with subepithelial collagen in a jejunal biopsy (‘collagenous sprue’) which responded well to treatment with prednisolone in addition to a gluten-free diet. The indications for corticosteroid treatment in adult coeliac disease are discussed in the light of the findings. It is suggested that collagenous sprue may represent the most severe form of adult coeliac disease, and the presence of sub-epithelial collagen in a jejunal biopsy may be the strongest indication for treatment with the combination of a gluten-free diet and corticosteroids.

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