690 patients were treated for testicular tumour in the course of 18 years. The histology of 7 cases showed Leydig cell tumour. In 4 of the 7 cases, a metastatic process leading to death was observed. At the time of diagnosis, 5 patients were found to have low stage, whereas 2 of the patients had advanced lymphatic involvement. The hematogenous and lymphatic metastases proved to be resistant to chemotherapy. Contrary to the major part of the literature, retroperitoneal lymphadenectomy should be performed with this histological type for the exact pathological staging immediately following orchiectomy.

Our results demonstrate that shock wave energy induces transient functional damage of tubular function in children. Minimizing the kV. and number of shocks may decrease the deleterious effect. When considering functional regeneration time, the minimal interval between 2 shock wave treatments should be at least 15 days. The long-term effect needs further investigation.

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Background/Aim: In spite of early detection, appoximately 15% of the small renal cell carcinomas (RCC) will develop metastasis within 5 years follow-up. The aim of this study was to identify new biomarkers to estimate the postoperative relapse of the most common conventional RCC. Patients and Methods: Tissue multi arrays of conventional RCC without metastasis at the time of operation from a cohort of 634 patients were analysed by immunohistochemistry for expression of the chitinase 3-like protein 2 (CHI3L2). Cancer specific survival of patients was estimated with Kaplan-Meier analysis, univariate and multivariate Cox regression models. Results: Kaplan-Meier analysis estimated a shorter cancer-free survival for patients with CHI3L2 positive tumors. In multivariate analysis, the CHI3L2 positivity associated with a 3.5 times higher risk for tumor relapse (p<0.001). Conclusion: Expression of CHI3L2 in tumor cells of conventional RCC define a group of patients at high risk for postoperative progression.

After LPN of small renal mass, decline in renal function is primarily attributed to parenchymal loss caused by tumor resection and suturing of the normal parenchyma rather than the RI.