膀胱癌在有地方性原道血吸虫病的国家如埃及最为常见，占总癌症发生率的26．4％。因而，寻找一种可早期预示该病的可靠标记物极为重要。血清标记物CA19·9已被用于胰腺和胃肠癌以及某种程度的膀眈癌。作者报道了用免疫荧光测定24h尿中的CA19．9，可提高这种标记物的诊断灵敏度 Bladder cancer is most common in countries with endemic pathological schistosomiasis, such as Egypt, accounting for 26.4% of all cancers. Therefore, finding a reliable marker that can predict the disease early is of paramount importance. Serum marker CA19.9 has been used in pancreatic and gastrointestinal cancers as well as to some extent in bladder cancer. The authors reported that the 24 h urinary assay of CA19.9 by immunofluorescence enhanced the diagnostic sensitivity of this marker