A case of amebic liver abscess and the results of Serameba test among Vietnamese refugees.

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Recently, amebic liver abscess cases have been reported sporadically, showing the trend of increase in Japan. Main source of the infection is considered to be (1) so-called imported amebiasis by oversea travelers and refugees from the endemic areas and (2) native asymptomatic E. histolytica cyst passers in the community. The present paper reports on a case of amebic liver abscess of 34-year-old male Vietnamese refugee. He came to Japan in May 1981, and was admitted to our hospital in July 1981 with symptoms of fever and right lateral chest pain. E. histolytica was not detected by fecal examinations, but abdominal echography revealed a mass echo, 10 cm in diameter, in the right lobe of the liver. The necrotic contents of the abscess pocket in liver were aspirated, and trophozoites of E. histolytica were demonstrated from the exhausted pus. Serameba® test showed positive reaction. He was discharged from the hospital after complete cure by the administration of metronidazole (2 g/day×10 days×2 courses). For this occasion, Serameba® test was carried out on his 32 associates (21 male, 11 female), and only one serum (3.1%) showed positive reaction. Fortunately, neither abscess in liver nor E. histolytica in feces was found in this positive case.
日本熱帯医学会の論文