Abstract
The uses of contrast media in the various acute abdominal conditions are discussed. The value of water-soluble oral contrast media in the investigation of bleeding from the gastro-intestinal canal is discussed. The use of the same medium in the investigation of leaks and perforations from the alimentary canal is discussed. Consideration of the use of intravenous Biligrafin in the differentiation of acute obstructive and non-obstructive cholecystitis is made. The value of intravenous pyelography in the investigation of acute urinary conditions is also discussed.

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