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Extrarenal Pyelocalyceal System

The major calyces and renal pelvis lie outside the renal parenchyma. The minor calyces have contact with the renal papilla and parenchyma. The extrarenal collecting system is rare and usually without any clinical significance. Concomitant malformations are typical.

Extrarenal pyelocalyceal system in crossed renal ectopia with hydronephrosis caused by a ureteropelvic junction obstruction. With kind permission, Dres. Trenschel, Engels, Kiebach, Kosch und Stahl, Radiologische Praxis Augsburg.

References

  Deutsche Version: Extrarenales Kelchsystem