A CASE REPORT OF COLITIS DUE TO BLASTOCYSTIS HOMINIS

Kohsin SHIKIYA; Shigeyoshi TERUKINA; Atsushi HIGASHIONNA; Tamiki ARAKAKI; Keizoh KADENA; Yoshiteru SHIGENO; Fukunori KINJO; Atsushi SAITO

doi:10.11280/gee1973b.31.1851

Kohsin SHIKIYA, Shigeyoshi TERUKINA, Atsushi HIGASHIONNA, Tamiki ARAKAKI, Keizoh KADENA, Yoshiteru SHIGENO, Fukunori KINJO, Atsushi SAITO

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JOURNAL FREE ACCESS

1989 Volume 31 Issue 7 Pages 1851-1854_1

DOI https://doi.org/10.11280/gee1973b.31.1851

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Abstract

A 70-year-old man was followed up at our out-patient clinic after radiation therapy for his lung cancer. He complained of abdominal pain and nausea in Sept. 1987. Colonofiberscopic examination showed erosion surrounded by red halo from the descending colon to the rectum. Examination of feces aspirated on colonoscopy revealed Blastocystis hominis. Blastocystis hominis was classified as yeast genus before, but recently it has been reclassified as a protozoan parasite. Its pathogenicity to lower digestive tract may depend upon its number in fecal specimen. Metronidazole is most widely used for the treatment. This is a first case described about colonofiberscopic findings of the colitis due to Blastocystis hominis in Japan.

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