Duplicated collecting system

Case contributed by Dr Bruno Di Muzio


One-year-old boy with recurrent urinary tract infections.

Patient Data

Age: 1-year-old
Gender: Male

CT Abdomen and pelvis (IVP)

Multiplanar CT study during the excretory phase shows (left side):

  • complete duplicated ureters extending down to the bladder
  • no signs of ureteroceles on the bladder
  • Vesico-ureteric reflux into the distal extremity of ureter draining the lower pole. No excreted contrast into the pyelo-ureteral system of the lower renal pole was seen
  • lobulated renal contour with multiple internal cysts areas in the lower renal pole that seems to be a pyelo-ureteral dilatation. This nonfunctioning lower pole mimics a renal mass

Case Discussion

Duplicated collecting system, also referred as duplex collectiong system, is one of the most common congenital renal tract abnormalities.

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Case information

rID: 12876
Published: 25th Jan 2011
Last edited: 16th Jul 2018
Inclusion in quiz mode: Included

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