<prompt> Water lily sign is seen inTBAspergillosisHydatid cystCryptococcosis  <response>: Classical signs of pulmonary hydatid cyst on chest X-rayUncomplicated hydatid cystComplicated hydatid cystWell circumscribed round radio-opacity resembling canon ball on AP and rugby ball on lateral projectionCrescent signPolycyclic and bilobed appearanceCumbo or double arch signSlot sign impending ruptureWaterlily or camelotte signRising sun signDry cyst signRef: Chapman and Nakielnys Aids to Radiological Differential Diagnosis 6thEtd, page no.82 