Introduction. Chronic recurrent bacterial prostatitis (CRPD) is an urgent problem of modern urology and andrology.
Objective: To study the immunological features of the secretion of the prostate by electron microscopy in patients with chronic recurrent bacterial prostatitis.
Materials and Methods. The analysis of the morphometric study of neutrophils in the secretion of the prostate was carried out in 90 patients with chronic bacterial prostatitis, who were divided into two groups. Group I (study) (n=51) with chronic recurrent bacterial prostatitis (CRBP) and group II (control) (n=39) with chronic primary diagnosed bacterial prostatitis (CPDBP).
Results. At electron microscopy of ALE in most patients with CRBP of the group, the cytological picture of ALE was represented by inactive neutrophils with pathology of phagocytosis. The cells are of the correct rounded shape, without pseudopodia, with light cytoplasm. The cytological picture of ALE in CPDBP is characterized by the absence of impaired local immunity. The normal process of phagocytosis is recorded, where many pseudopodia of the segmented neutrophil completely complete the process of opsonization of microorganisms in the area of the inflammatory process.
Conclusions. In patients with CRBP, in 100% of cases, dysfunction of immunocompetent prostate cells was noted, which is the basis for the appointment of immunoactive therapy for CRBP.

Keywords: opsonization, inactive neutrophils, phagocytosis, electron microscopy, chronic prostatitis