Drooping lily sign
- It is an urographic sign of .
- It refers to the inferolateral displacement of the opacified lower pole moiety due to an obstructed (and relatively unopacified) upper pole moiety.
- The similarity to a lily is further strengthened by the small number of calyces the lower pole moiety has.
- In duplicated collecting system it is classically the upper pole ureter that is obstructed due to an and the lower pole ureter that : as described by the .