FIELD : medicine.SUBSTANCE : invention relates to medicine, namely to oncology. Remove the prostate gland with seminal vesicles, pelvic tissue with lymph nodes, form vesicourethral anastomosis. Parietal peritoneum is pulled out and the parietal leaf is dissected using a monopolar coagulator along the transition fold and the distal parts of the lateral canals. Cavity of a small pelvis on the right and on the left is drained. Wound is sutured in layers.EFFECT : invention may be applicable for the prevention of lymphorrhea and lymphocyst in patients with prostate cancer after surgical treatment.1 cl, 5 dwg, 1 tbl, 1 ex