TRANSLUMBAR AORTOGRAPHY IN UROLOGIC DIAGNOSIS

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Abstract
• The type of information yielded by translumbar injection of radiopaque substances into the abdominal aorta has been studied especially with respect to the kidney. Sequential films show first an arteriographic and then a capillary (nephrographic) phase. To see the arteriographic phase requires proper timing but is important in distinguishing benign cysts from primary tumors of the kidney. In the past, erroneous conclusions have sometimes been reached because of technical faults, subsequent misinterpretations, and inherent limitations of the method. These points are illustrated by roentgenograms from actual aortographies and from specimens excised and injected. Lesions measuring up to 2 by 3 cm. in size have been simulated in injected specimens by actually inserting pieces of injected tumor tissue; they proved difficult to recognize in roentgenograms. Smaller tumors would therefore easily escape detection. Because of the risks of misinterpretation, and the morbidity and mortality of the procedure, it appears to be contraindicated unless the information to be gained can be expected to change the course of treatment.

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