Prostate abscess is not frequent, but serious complication of an acute prostatitis or an aggravation of a chronic prostatitis. According to various authors, prostate abscess is registered in 5-8 % of prostatitis patients. The abscess develops because of inadequate treatment of an acute prostatitis in the patients who were subjected to catheterization, transurethral drainage of bladder, suffering from diabetes or being in an immunodeficiency state.

    Abscess diagnostics at a formation stage is difficult. Earlier a priority in diagnostics belonged to a clinical data and results of digital rectal examination. It complicated early revealing of the disease. So, according to the references, prostate abscess is diagnosed only in 0.2%-1.4% of patients with clinical urological semiology and in 0.5-2.5% of cases in patients with semiology of prostate gland diseases. The reasons of difficulties with diagnostics is a development of disease along with an aggravation of a chronic prostatitis, frequent combination of an abscess with other inflammatory diseases of urinogenital system (pyelonephritis, epididymoorchitis, etc.), occurrence of the latent forms of the disease in the midst of applied antibacterial therapy, absence pathognomonic symptoms of an abscess (pain in perineum and rectum, dysuria, fever).

    Three-dimensional (3D) NLS with metatron 4025 hunter has proved itself as simple, noninvasive and highly informative diagnostics method, thanks to absence of beam loading. The issue of 3D NLS application in monitoring of conservative treatment of prostate abscess is studied insufficiently.

    It's important to study of 3D NLS with NLS-angiography possibilities in monitoring of conservative treatment of prostate abscess.