[The advisability of performing excretory urography in renal colic]

Basing on their experience with 1115 cases of prehospitalization excretory urography, the authors think it misleading to reject excretory urography at the height of renal colic because normal kidney completely excretes contrast medium. It is shown that a part of the latter is deposited by the affected kidney and fills the upper urinary tracts up to the level of the obstacle causing acute urostasis. Excretory urography at the height of renal colic is valid in hospitals with 24-hour x-ray service and in cases of urgent surgery.