[Could the transrectal prostate biopsy predict the rate of positive lymph nodes in prostate cancer patients?].

Since 1989, when Hodge and al. demonstrated transrectal ultrasound guided prostate biopsy, it has become a "gold standard" for the diagnosis of prostate cancer. According to the experience gained in the period 1999-2003 in the Department of Urology-Medical University, Sofia, in a prospective follow-up of 20 prostate cancer patients, we found relationship between the positive tru-cut biopsy cores and the rate of positive lymph nodes.

[Local recurrence of the renal cell carcinoma in renal fossa after complete radical nephrectomy. What are the risk factors?].

The local recurrence of the renal cell carcinoma in renal fossa after complete radical nephrectomy is uncommon. According to the latest articles related to this issue it ranges between 2% and 4%. For the period of 1999-2005 we evaluated 11 patients who underwent surgery for isolated renal cell carcinoma recurrence, all of them without clinical presence of distal metastases.

[Acute urinary retention].

Acute urinary retention is a problem a high medico-social importance. Many risk factors modify its incidence. Having un adequate information of the ethiology and the pathogenesis of the disease itself gives new opportunities for future therapeutic methods.

[Methods optimizing the efficiency of the extracorporeal shockwave lithotripsy (ESWL)].

The medicine science is in a progressive mode. One of the ever discussed problems is the stone kidney disease and the optimizing methods of its treatment. In this article the authors announced a new method of applying jelly, thus improving the efficiency of the Extracorporeal Shockwave Lithotripsy (ESWL).

[The echography as a method for measuring the calculus volume].

The method of echography is one of the basic diagnostic methods used in medicine. It's application is of a great importance for the clinical estimation of the cases of kidney stone disease. The authors put a stress on the use of the echography as a method of a brand-new conception aiming to get a vision of the kidney stone as a geometric figure, based on a mathematical principle.

[Biliurolithiasis - a classification of a disease with complex characteristics].

The development of the medicine itself, meets the current question of the common, interdisciplinary method of approach in the treatment of a series of diseases, such as biliurolithiasis. The attempt to make a classification is basic for making an optimal method of treatment of the biliurolithiasis. The biliurolithiasis is a disease influencing some new strategies of treatment in the combined efforts of the urologist and the surgeons both.

[Operative method of pyeloplasty: X-pyeloplasty].

The classic operative methods are still topical. Applying some new operative techniques makes the medical science more complete and thus help better treatment of the variety of diseases encountered in medical practice. In this article the authors present brand - new operative method of pieloplasty, named by them X-pieloplasty.