duplicated collecting system
Congenital anomaly where a kidney has two separate collecting systems with distinct ureters.
Full Definition
A duplicated collecting system is a common congenital urological anomaly where the kidney develops with two separate renal pelves and ureters, either completely or incompletely duplicated. Complete duplication results in two separate ureters draining into the bladder, while incomplete duplication involves a bifid collecting system that joins before entering the bladder. The upper pole ureter often has an ectopic insertion and may be associated with ureterocele, while the lower pole ureter may demonstrate reflux. This condition requires careful imaging evaluation and may necessitate surgical intervention.
Usage
Usage note: Specify whether complete or incomplete; identify upper and lower pole components separately.
In Context
- "MRI confirmed complete duplicated collecting system with ectopic insertion of the upper pole ureter." — Imaging report
- "The patient underwent heminephrectomy for the dysplastic upper pole of the duplicated system." — Operative summary