| Objective To study the expression of TM (thrombomodulin) in human renal pelvic transitional cell carcinoma by the means of immunohistochemistry technic , and compare it with that in human renal cell carcinoma and evaluate whether TM can be a tumor marker that can differential diagnose renal pelvic transitional carcinoma from renal cell carcinoma , and provid a theory evidence for different therapy of two kinds of renal carcinoma . In addition , to study the relation between TM and the procession of stages and classification in transitional cell carcinoma, and provid theory for operation treatment, post therapy of operation and prognosis .Material & methods All the speciments were collected from department of pathology of The Affiliated Hospital of Medical college , Qingdao University . Our study involved renal pelvic transitional cell carcinoma (40 cases) , renal cell carcinoma (20 cases) in different stages and classification and involved speciments of normal renal tissue (10 cases) . Expression of TM were mesured by means of SP immunohistochemistry in all the speciments by using mouse anti-human TM monoclonal antibody , and the different expression in renal pelvic transitional cell carcinoma and renal cell carcinoma tissue were observed and in the meaning , different expression in renal pelvic transitional cell carcinoma in different stages and classification were observed . The results were analysised statistically .Results In 40 cases of renal transitional cell carcinoma , TM positive cases were 37 and total TM positive rates was 92.5% , The means of TM positive cell rates , which the cells with TM positive expression were compared with all carcinoma cells ,were 67.2±4.6% . In 20 cases of renal cell carcinoma , TM positive cases was 1 and total TM positive rates is 5% , and there were significant difference between renal transitional cell carcinoma group and renal cell carcinoma group, P<0.01 . There was no TM expressionin in normal renal issues . The TM positive cell rates decreased with the procession of stages and classification in transitional cell carcinoma . In addition ,there were 8 cases that occurred bladder carcinoma in 40 cases of renal... |