title: Dynamic CT features of hepatic abscesses.
abstract: Forty hepatic abscesses were examined with dynamic computed tomography (CT). A "double target sign," consisting of a hypodense central area surrounded by first a hyperdense ring and then a hypodense zone, seems to be highly suggestive of abscess formation. In 12 cases, the hepatic parenchyma surrounding the lesion demonstrated transient hyperdensity after contrast injection, possibly due to localized hepatic venous obstruction secondary to acute hepatic inflammation. This is similar to the appearance of an arterioportal fistula.
mesh_terms: D000328:Adult; D000368:Aged; D001424:Bacterial Infections / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D007482:Iothalamate Meglumine; D008099:Liver / Q000000981:diagnostic imaging; D008100:Liver Abscess / Q000000981:diagnostic imaging*; D008101:Liver Abscess, Amebic / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D014057:Tomography, X-Ray Computed
chemical_list: D007482:Iothalamate Meglumine