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Both urinary bilharziasis and urothelial neoplasia are associated with increased production of tissue carcinoembryonic antigen (CEA). Urine and serum CEA were determined in 43 patients with urinary bladder carcinoma including 22 post bilharzial and 21 non-biharzial cases, in addition to 10 normal control cases. A significant increase was detected in both urine and serum CEA levels with bladder carcinoma compared to control cases. Urinary CEA was significantly elevated in 86% of bilharzial versus 62% in nonbilharzial bladder carcinoma. Only 10.5% of control cases had urinary CEA elevation. The mean urinary CEA in bilharzial was higher than that of nonbilharzial carcinoma, but the difference was not statistically significant. There was a definite relationship between urine CEA and the stage of malignancy; the higher the stage, the higher the level of urine CEA. No relationship could be detected between the stage of malignancy and serum CEA, or between the grades of malignancy and urine or serum CEA levels. In conclusion, urinary CEA is more useful than serum CEA in the early detection of bilharziasis-associated urothelial carcinoma.

tanzania health research bulletin

Urine carcinoembryonic antigen determination in urinary bladder bilharziasis predicts carcinoma in patients with premalignant lesions: Observation of 43 cases in Egypt