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[A case of bilharziasis diagnosed 10 years later].

A 31-year-old Japanese man had macroscopic hematuria 5 or 6 years previously. When he was examined at a local hospital, he was pronounced normal. However he still had macroscopic hematuria, so he visited our department. Urine cytodiagnosis was class II. Cystoscopy revealed irregular mucosa at the anterior wall and dome of the bladder. CT and MRI also demonstrated irregular thickness at the anterior wall of the bladder. A diagnosis of bilharziasis was made by histological specimen obtained by TUR-biopsy. The specimen did not show evidence of malignancy. When questioned about overseas travel, he said he had visited Malawi in Africa when he was 20 years old. As international exchange between Japan and other countries is now increasing, we will be examining more patients who have traveled to epidemic areas. In such patients, we should consider the possibility of Schistosomiasis.