has_part has part has part towards has modifier Duplicated collecting system UMLS:C1858565 Duplex collecting system Duplicated renal collecting system HP:0000081 Double urinary collecting systems on intravenous pyelography A duplication of the collecting system of the kidney, defined as a kidney with two (instead of, normally, one) pyelocaliceal systems. The pyelocaliceal system is comprised of the renal pelvis and calices. The duplicated renal collecting system can be associated with a single ureter or with double ureters. In the latter case, the two ureters empty separately into the bladder or fuse to form a single ureteral orifice. Double collecting system 2008-02-25T12:45:00Z Abnormal renal collecting system morphology abnormal duplicated renal collecting system