本病在世界上许多地区发现,主要分布在热带和亚热带地区。我国云南、广东、广西、福建、台湾、四川、湖北、山东、河南、山西、吉林等省区,均有散在性病例报告。河北、西藏两省区未见有报告。 例1,患者,男,39岁。本市工人,职业为汽车司机。患者一年前开始腹泻。并在腹泻前有腹痛,便急,一天便2～3次,有轻度里急后重感。体重减轻。便常规:粥样便,有少许粘液,镜检,白细胞1～2/HP,见结肠小袋纤毛虫滋养体,呈椭圆形,大小100×(70～80)μ。表膜上布满纤毛,胞口明显,可见胞肛和一个肾形大核。诊断为结肠小袋纤毛虫病。口服甲硝唑、红霉素治疗两周后。以上腹泻、腹痛症状消失。两次复检粪便再未找到结肠小袋纤毛 The disease is found in many parts of the world, mainly in tropical and subtropical regions. China’s Yunnan, Guangdong, Guangxi, Fujian, Taiwan, Sichuan, Hubei, Shandong, Henan, Shanxi, Jilin and other provinces and autonomous regions, there are scattered case reports. No reports have been made in Hebei and Tibet provinces. Example 1, patient, male, 39 years old. The city workers, occupation as a car driver. The patient started diarrhea a year ago. And abdominal pain in the diarrhea before, they urgency, it was 2 to 3 times a day, with mild tenesmus. Weight loss. Conventional: porridge-like, a little mucus, microscopic examination, leukocytes 1 ~ 2 / HP, see the colon pouch ciliates trophozoites, oval, size 100 × (70 ~ 80) μ. Membrane covered with cilia, cell port was obvious, showing the anal cell and a kidney-shaped large nucleus. Diagnosis of colon pouch ciliates disease. Oral metronidazole, erythromycin two weeks after treatment. The above diarrhea, abdominal pain symptoms disappear. Two re-examination of the stool and then found no colonic pouch cilia