[Differential diagnosis of epithelial tumors of the bladder by means of determination of their mitotic system].

The results of the study of the mitotic regimen (mitotic activity, ratio of mitosis phases and percentage of pathological mitoses) in epithelial tumours of the urinary bladder are presented. Different tumours of the urinary bladder were found to have their own mitotic regimen which may be used as an additional criterion in the diagnosis of epithelial tumours of the urinary bladder.