Floating water lily sign is seen in: (A) Aspergillosis, (B) Hamartoma, (C) Hydatid cyst, (D) Cavitating metastasis
Answer is C. Ans. is 'c' i.e. Hydatid cyst Separated membranes floating with the cyst give the appearance of water lily.It is pathognomonic of hydatid cyst.