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Background: The aim of the study is to assess the prognostic value of p53 positivity in the non-tumor mucosa of urinary bladder in patients with superficial urinary bladder carcinoma., Methods and Results: In 45 patients cold cup non-tumor mucosa samples were taken at the same time with the TUR of superficial urinary bladder carcinoma prospectively. Monoclonal antibody BP53-12-1 was used for the detection of p53 protein. When identifying positive colouring only the nuclear immunoreactivity was being evaluated. 200 nuclei at minimum were examined in several representative fields. The McCarthy method in Bacus modification was used to analyse the findings. It is a semiquantitative method which detects not only the percentage of p53 positive cells but also the intensity of positivity classified into four degrees (0 - negative, 1 - slightly positive, 2 - distinctly positive, 3 - strongly positive). The intensity of p53 positivity was quantified as HSCORE, where HSCORE = 7Pi (i + 1), in which i is one of the four see above degrees and Pi fluctuates from 0 % to 100 %. The result is a numerical figure from 100-400. A negative finding is of HSCORE 100, HSCORE of 400 is the highest possible. The samples were analysed in the analytical system LUCIA. The borderline value was quantified to HSCORE 200. All patients were carefully followed up and treated using usual schemes. The results were evaluated by the use of SAS system (Cary, USA). Thirty patients recurred during the follow-up and 7 of them progressed. The average HSCORE in those who did not recur was 130.2, in patients with the recurrence of tumor it was 162.5 and in patients with progression it was 169.2. We have found a correlation between the HSCORE and the risk of recurrence, which was statistically significant., Conclusions: The p53 positivity in non-tumor mucosa of urinary bladder in patients with superficial bladder cancer may bring additional information when predicting the risk of recurrence. More extensive studies need to be carried out.

Background: Percutaneous nephrolithotomy is an effective less invasive method for the treatment of nephrolithiasis. Authors retrospectively analysed results of this procedure performed in a single centre (Department of Urology, General University Hospital, Prague) from January 2005 till June 2007., Methods and Results: Patients were acquired by an analysis of operating reports performed over a period January 2005 till June 2007 and subsequently a retrospective analysis of electronic and paper patient's records was carried out. Percutaneous nephrolithotomy was performed in 150 patients. Of those, 117 (78%) patients underwent primary and 33 (21.3%) secondary procedure. Analysed group consisted of 85 (56.7%) men and 65 (43.3%) women. Right-sided procedure was performed in 46% (69 times) and left-sided in 54% (81 times) of cases. Mean patient's age was 52.9 years (SD +/- 16.3). Mean stone size was 18.3 (SD +/- 9.5) mm. Staghorn calculi were present in 19 (12.7%) patients and 77 (51.3%) patients had more than 1 stone. Intracorporeal lithotripsy was necessary in 82 (54.7%) cases. Seventy eight (52.9%) patients were stone free after the procedure. There were 24 (16%) patients with an anatomic abnormality of upper urinary tract. The most common (in 64.3%) component in analysed stones was a calcium oxalate., Conclusions: The amount of stone free patients is rather lower compared to the literature results. However, definitive results are always affected by auxiliary procedures (mainly extracorporeal shock wave lithotripsy), which are not included in the analysis.

Laparoscopy is the most modern operative technique, the main advantage of which is the least invasivity. In urology, the laparoscopy has won its yield only in nineties of 20th century, but it was in urology, where the robots were launched as first, and nowadays using them it is possible to perform ablative/reconstructive surgery in a tiny intracorporeal space. The price of laparoscopic operations is high and has been the only limit up to now, but technical approaches and indications have already been fixed.

Background: Early diagnostics of prostate cancer is still the most important factor in tumor-specific survival of patients harbouring this malignant disease. Without better understanding of the etiology and without relevant markers of the disease progression, only the early diagnostics of organ-confined disease can save the patient's life., Methods and Results: Throughout 7 consecutive years, 1464 transrectal prostate biopsies in 1302 patients were performed. In all cases, the age, DRE (positive or negative), prostatic volume (ccm), total PSA in peripheral blood (ng/ml) were assigned, as well as free/total PSA ratio (%) in most of them. Apart from previously used linear regression, we applied logistic regression, since only age grows linear and DRE is determined only as positive or negative. The surrogate endpoint was ROC, which determines the area applying to the relations of sensitivity and specificity of any marker. Multifactorial logistic regression then reached best results at values over 0.8 in all tested age categories with maximal deviation of 8%, which had not been achieved before., Conclusions: Despite hundreds of papers published on this topic, the question of when and how the patient is indicated to the biopsy of the prostate has not been solved. A computer driven model based on 1464 documented examinations on the relatively homogeneous population is presented. On the basis of the combination of biological and statistical methods, the model can give correct predictions in 9 out of 10 cases.

Radical cystectomy with pelvic lymphadenectomy and urinary diversion is an important component in the treatment of bladder cancer. It is considered the most important method in the therapy for muscle invasive and selected high-risk non-muscle invasive tumours with excellent local control and high complete remission rate. It consists of complete removal of tumour tissue in the bladder, small pelvis and regional lymph nodes. In males, urinary bladder and prostate are routinely removed; in females, bladder, uterus and anterior vaginal wall are removed. Urethrectomy is indicated only in selected situations. An integral part of the operation is the bilateral pelvic lymphadenectomy. Extravesical disease extension and lymph node positivity are unfavourable prognostic factors. Better prognosis is expected in patients with less than 5 positive nodes. Important prognostic factor is also the number of removed lymph nodes, which is a strong argument for meticulous bilateral pelvic lymphadenectomy. Lymph node density (number of positive nodes/ number of removed nodes) is considered as very important prognostic factor. Better prognosis can be expected in patients with less positive and more removed nodes.