title: Waterlily sign.
authors.affiliation: Government Medical College and Hospital, Chandigarh, India.
authors.forename: Maneesh
authors.initials: M
authors.lastname: Khanna
authors.forename: Sandeep
authors.initials: S
authors.lastname: Chauhan
authors.forename: Usha
authors.initials: U
authors.lastname: Dalal
authors.forename: Sarabmeet S
authors.initials: SS
authors.lastname: Lehl
mesh_terms: D000328:Adult; D003371:Cough / Q000209:etiology; D003937:Diagnosis, Differential; D004445:Echinococcosis, Pulmonary / Q000150:complications / Q000175:diagnosis* / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D014057:Tomography, X-Ray Computed