Concurrent amoebic and Klebsiella pneumoniae liver abscess in an immunocompetent patient: an unusual case report and review of the literature.

摘要

Amebiasis is an important protozoan infection caused by Entamoeba histolytica (E. histolytica), which is the third leading cause of death among parasitic infections.1 Although it is endemic in developing countries and tropical and subtropical regions, more cases of amebiasis are appearing in developed countries with increasing world travel and changing patterns of immigration.2'3 According to the calculations by Jiang etal. in 1997,4 the E. histolytica infection rate was 0.01% in Shanghai, but it has gradually decreased during the last decade. In contrast with intestinal amebiasis, amebic liver abscess as the extra-intestinal form of E. histolytica infection is relatively uncommon, but the inappropriate diagnosis and treatment of amoebic liver abscess can result in serious complications.5 Klebsiella pneumoniae (K. pneumoniae) has displaced Escherichia coli as the leading pathogen for pyogenic liver abscesses in the Asian population and K. pneumoniae infection has also been strongly associated with diabetes mellitus.