Extrarenal Pyelocaliceal System
An extrarenal pyelocaliceal system is characterized by calyces and renal pelvis, which are not within the renal parenchyma. The pyelocaliceal system contacts only next to the papilla the renal parenchyma, the hilus is flat and wide. The extrarenal collecting system has usually no clinical significance.
Extrarenal pyelocaliceal system in crossed renal ectopia with hydronephrosis: there is a clear separation between renal parenchyma and pyelocaliceal system, the hydronephrosis is caused by ureteropelvic junction obstruction. With kind permission of Dres. Trenschel, Engels, Kiebach, Kosch und Stahl, Radiologische Praxis Augsburg.
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- Malament, M.; Schwartz, B. & Nagamatsu, G. R.
- Extrarenal calyces: their relationship to renal disease.
Am J Roentgenol Radium Ther Nucl Med, 1961, 86, 823-829