FIBEROPTIC SIGMOIDOSCOPY COMPARED WITH THE KATO TECHNIQUE IN DIAGNOSIS AND EVALUATION OF THE INTENSITY OF SCHISTOSOMA-MANSONI INFECTION

被引:9
作者
ABDELHAFEZ, MA [1 ]
BOLBOL, AA [1 ]
机构
[1] KING SAUD UNIV, DEPT PARASITOL, RIYADH, SAUDI ARABIA
关键词
D O I
10.1016/0035-9203(92)90169-D
中图分类号
R1 [预防医学、卫生学];
学科分类号
1004 ; 120402 ;
摘要
450 patients in Riyadh, Saudi Arabia, complaining of chronic abdominal pain and, coming from different countries endemic for schistosomiasis, were examined endoscopically using fibre-optic colono- or sigmoidoscopes, and rectal biopsies were examined for Schistosoma mansoni ova. After a preliminary study showed that more than 6 biopsies did not increase the positivity rate, 6 biopsies were taken from the rectum and examined by the transparency technique. 280 were positive for S. mansoni, 9 of them having in addition S. haematobium. 4 patients had polyps in the sigmoid colon and rectum. When these positive cases were examined using duplicate 50 mg Kato smears, only 160 (57.1%) were positive. There was a highly positive correlation between the intensity of infection as graded by the 2 techniques. We recommend examination of 6 rectal biopsies using fibre-optic sigmoidoscopy when available in small communities with a patchy distribution of schistosomiasis like Saudi Arabia. The method could also be used to exclude schistosomiasis in persons who have moved from rural to urban or non-endemic areas and are unlikely to be re-exposed to infection.
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页码:641 / 643
页数:3
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