Splenic blood pool: occasional hindrance of accurate interpretation of renal dynamic scintigrams.

Because of the proximity of the spleen to the left kidney, the splenic blood pool occasionally interferes with the interpretation of the renal flow images. A review of one hundred consecutive renal dynamic studies revealed some interference in 34 per cent of the studies. The distinction between splenic blood pool and the left kidney can be made on the static images, for the renal studies. If doubt persists, a colloid scan will identify the spleen. An illustrative case is presented.