ABSTRACT
The parasite Entamoeba histolytica is generally considered to be a possible causative organism in older children with hepatic abscess,33,34 but it has rarely been documented to occur in newborns.35 Due to nonspecific signs and symptoms, the diagnosis again rests on clinical suspicion. Serologic testing via indirect hemagglutination or complement fixation assays can be a useful diagnostic tool. Even though investigators have tried to differentiate the radiographic appearance of amebic vs pyogenic liver abscesses,36 fine-needle aspiration of the abscess cavity is often required. Return of characteristic ‘anchovy paste’ appearing material is suggestive of amebic infection. Rather than drainage as the standard of therapy, amebic liver abscesses can often be treated successfully with a 30-day course of metronidazole and iodoquinal.37,38
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