SCHISTOSOMAL lesions affecting the urinary bladder in the majority of Egyptian farmers play a great role in the higher percentage of bladder cancer (the most common form of cancer in Egypt) at earlier ages than in any other country (El Sebai, 1962 Eighty-six patients were included in the study and were divided into 4 groups. None had undergone urologic instrumentation (cystoscopy and catheterization) for at least 2 weeks preceding study, and none of the females was menstruating or pregnant (Kark et al., 1963).
Group ITwenty-two healthy adults, 18 men and 4 women whose ages ranged from 18 to 65 years. All were ambulatory, with no history of renal disease. All individuals in this group were subjected to the same investigations as those in the other 3 groups. They included a complete history, physical examination, including blood pressure, blood picture, sedimentation rate, blood urea nitrogen, microscopic
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