title: Primary hydatid disease in a retroplaced gallbladder.
abstract: A 60-year-old man with abdominal distension, fever, vomiting and pain on the right upper quadrant of the abdomen was admitted to our hospital. US revealed a well circumscribed lesion of mixed echogenicity. CT revealed hypoplasia of the right liver lobe, and a cystic mass with solid components replacing a retroplaced gallbladder. On T1-weighted MR images the lesion had low signal intensity and presented mild peripheral post-contrast enhancement, while on T2-weighted images the periphery was of moderately high signal intensity and the centre of fluid-like, high signal intensity. Adjacent liver parenchyma had relatively high signal intensity on T2-weighted images. The patient underwent exploratory laparotomy, and a hydatid cyst of the gallbladder that was inflamed was evidenced.
authors.affiliation: 2nd Department of Surgery, Medical School, Democritus University of Thrace, Alexandroupolis, Greece.
authors.forename: Michael S
authors.initials: MS
authors.lastname: Pitiakoudis
authors.forename: Alexandra K
authors.initials: AK
authors.lastname: Tsaroucha
authors.forename: Sauras
authors.initials: S
authors.lastname: Deftereos
authors.forename: Prodromos
authors.initials: P
authors.lastname: Laftsidis
authors.forename: Panos
authors.initials: P
authors.lastname: Prassopoulos
authors.forename: Constantinos E
authors.initials: CE
authors.lastname: Simopoulos
mesh_terms: D002758:Cholangiography / Q000379:methods; D002763:Cholecystectomy; D004443:Echinococcosis / Q000175:diagnosis* / Q000601:surgery; D005704:Gallbladder / Q000000981:diagnostic imaging / Q000469:parasitology / Q000473:pathology* / Q000601:surgery; D005705:Gallbladder Diseases / Q000175:diagnosis* / Q000469:parasitology / Q000601:surgery; D006801:Humans; D008099:Liver / Q000473:pathology; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography