The abscess of prostate is difficult to diagnose, because the semiology is not strictly specific. More often symptoms of an abscess, an acute prostatitis and an aggravation of a chronic prostatitis are identical. Only in several patients the classical combination of fever, dysuria, urinations frequency increasing, pain in perineum and bacteriuria is marked. So, the fever in patients is marked in 60% – 75% of cases, pain in perineum – in 20% – 33% of cases. Presence of a fluctuation symptom at palpatory study is registered not often also – in 27% – 35% of cases and corresponds to a purulent-destructive stage. In laboratory researches of prostate gland secretion the acute increase of leukocytes quantity is noticed, that is also typical for acute prostatitis. The invaluable help in diagnostics of prostate gland is rendered by SEA results.

    According to references, there are two stages in abscess development – infiltrative stage and purulent-destructive stage. NLS-picture infiltrative stage in 3D NLS mode is characterized by presence of hyperchromogenic zones of oval shape, of homogeneous and non-uniform structure. At inflammatory reaction progressing in a structure of the gland hyperchromogenic areas of non-uniform structure appear. At formation of an abscess structure of the areas becomes more homogeneous. The first stage is reversible and is a subject of conservative treatment. The second stage is irreversible, and surgical treatment is required here.

    According to our research, in all patients the disease has been revealed in its first stage. It was promoted by several factors: evident clinical picture, carried out laboratory research taking into account availability of program for NLS-screening of prostate gland diseases, that provided early admittance of patients and dynamic supervision over a treatment course.

    Differential diagnostics of an abscess at NLS is carried out with cysts and with rostate gland cancer sites. Simple cysts and cystic degeneration of prostate gland are sonographically similar to developed prostate abscess, but differ in location (more often: a single central location at congenital cysts or location in the central part against the background of adenomatously changed parenchyma). It is difficult to differentiate an abscess and cancer of prostate gland. Distinctive criteria at NLS are considered to be: location – an abscess is more often located in a transitive zone of a gland, but cancer – in peripheral; size – more often an abscess is larger than a tumor, at an abscess – presence of changes in structure and size at dynamic treatment. In diagnostically difficult cases SEA of prostate gland is recommended. In our opinion, location and size are not the exact diagnostic criteria: in the presence of large tumors a cystic component may be present in their structure, which is a site of disintegration. In 8 patients of our research, abscess formation sites were located in a peripheral zone, and the average size of them was small – comparable with a tumor site.

    Dynamic observation during a small period of time has shown that tumor sites and cystic degeneration areas do not change in structure and size; abscess formation sites, in case of a positive response to therapy decrease in size, when they disappear formation of small fibrous sites in a projection of these sites is possible.

    Thus, 3D NLS of metatron hunter with NLS-angiography is an informative method of prostate abscess conservative treatment monitoring an in out-patient conditions.