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Immunohistochemical examination of microvascular density can be an additional prognostic factor in patients with superficial urinary bladder carcinoma, nevertheless, more extensive studies need to be carried out. Maximal microvascular density correlated with a recurrence free interval and in a case of bigger group of patients could be statistically significant. The statistical correlation between MVD and a nuclear p53 accumulation is that significant that we assume the p53 importance in the angiogenesis regulation of superficial urinary bladder carcinoma. The p53 positivity in non-tumor mucosa of urinary bladder in patients with superficial bladder cancer correlates with higher risk of tumor recurrence. According to our results the reason of urinary bladder carcinoma multifocality is genetic instability present in the whole urothelium at the time of tumor diagnosis. The PAX5 gene expression is a frequent finding in superficial transitional cell carcinoma of the bladder. From the prognostic point of view, high levels of PAX5 expression seem to be connected with higher recurrence and progression rates. The extent of lamina propria invasion seems to be a clinically relevant prognostic factor for progression of T1 bladder transitional cell carcinoma. Finding T1b tumor is connected with the risk of understaging...