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Duplicated ureter or duplex collecting system is a congenital condition in which the ureteric bud, the embryological origin of the ureter, splits (or arises twice), resulting in two ureters draining a single kidney. It is the most common renal abnormality, occurring in approximately 1% of the population.
The drooping lily sign is typically seen in the context of a duplex collecting system, a congenital anomaly in which the kidney has two separate ureters draining from two distinct renal segments (upper and lower poles).
Duplex kidney (Duplicated collecting system): A congenital condition where the kidney has two separate ureters (complete duplication) or a bifid ureter (partial duplication). In a coronal plane, both moieties may be visible, but in axial sections, one of the moieties may lack visible renal sinus structures, creating the faceless kidney sign.
A ureterocele is a congenital abnormality found in the ureter. In this condition the distal ureter balloons at its opening into the bladder, forming a sac-like pouch. It is most often associated with a duplicated collection system, where two ureters drain their respective kidney instead of one. Simple ureterocele, where the condition involves ...
Duplex kidney (Duplicated collecting system): A congenital condition where the kidney has two separate ureters (complete duplication) or a bifid ureter (partial duplication). In a coronal plane, both moieties may be visible, but in axial sections, one of the moieties may lack visible renal sinus structures, creating the faceless kidney sign.
It is classically described that there are three sites in the ureter where a kidney stone will commonly become stuck: where the ureter meets the renal pelvis; where the iliac blood vessels cross the ureters; and where the ureters enter the urinary bladder, [9] however a retrospective case study, which is a primary source, of where stones lodged ...
Kelly's sign is a clinical sign in which the ureter can be distinguished during surgery due to visible vermiculation which occurs when the ureter is pressed gently. [ 1 ] The sign is named after Howard Atwood Kelly .
Ectopic ureter (or ureteral ectopia) is a medical condition where the ureter, rather than terminating at the urinary bladder, terminates at a different site. [ 1 ] [ 2 ] In males this site is usually the urethra , in females this is usually the urethra or vagina . [ 3 ]