A case of severe steatorrhoea late after a Pólya type subtotal gastrectomy in an adult man is presented, The cause of the steatorrhoea was found to be a selective deficiency of lipolytic pancreatic enzymes in intestinal contents. The aetiology of this enzymic deficiency seems to be related to the gastric resection performed rather than to a primary pancreatic enzymic deficiency. It is concluded that in the work-up of steatorrhoea following gastric resections pancreatic function tests should include determinations of both pancreatic lipase and trypsin activities in intestinal contents especially as accurate methods for the estimation of pancreatic lipase activity are available.

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