Non-resolving liver abscess with Echinococcus cross-reactivity in a non-endemic region.

A 40-year-old woman presented with high fever with chills and rigors. Imaging studies revealed multiple liver abscesses with hepatosplenomegaly and gall-stones. Ultrasound-guided aspirate revealed pus that was negative on Gram and acid-fast staining and for amebic trophozoites. ELISA for echinococcus was strongly positive, but she did not respond to albendazole therapy. At surgery, Fasciola hepatica was detected and she responded well to bithinol postoperative.