Drooping lily sign
 Discussion of Drooping lily sign
- A dilated, obstructed upper moiety ureter, in a completely duplicated system, may produce downward and lateral displacement of the functional lower moiety collecting system, appearing radiographically as the well-known drooping lily sign.
- The sign is often accompanied by a bladder filling defect, representing a ureterocele, which is associated with the ectopic insertion of the upper moiety ureter.
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 References for Drooping lily sign
- Raymond B. Dyer, Michael Y. Chen, and Ronald J. Zagoria. Classic Signs in Uroradiology. RadioGraphics 2004 24: S247-280S.