Abstract

The effects of Thiotepa, Mitomycin C, BCG and Interferon on urothelium were researched in rabbits. Early changes of a contracted bladder such as fibroblastic atypia and sub-epithelial plaque were seen in all groups in different rates. This rate in the Thiotepa and BCG groups was 100% and in the Mitomycin C and Interferon groups 60%. There was no urothelial dysplasia in the BCG and Interferon groups, whereas in the Thiotepa group 100% and in the Mitomycin C group 40% were seen. In conclusion, urothelial dysplasia or fibroblastic atypia in random biopsies were criteria to prevent further complications in intravesical therapies.

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