An analysis was made of the results of an all-round clinical, ultrasound, phlebotonometric and phlebographic examination of 89 patients with the clinical evidence of chronic venous insufficiency (CVI) of the pelvis. It is established that small pelvis varicosis develops because of hemodynamic disorders in the system of the inferior vena cava, iliac and left renal veins. In men, blood reflux from the iliac vein to the parietal tributaries leads to the development of the atypical forms of varicosis. In women, the left- sided regional renal venous hypertension induces valvular insufficiency of the left ovarian vein with the extent of the renoovarian blood reflux to the pampiniform, uterovaginal, presacral, vesical and rectal venous plexus. The concomitant action of the caval and renoovarian blood refluxes causes the origination of the syndrome of the blood overfilling of the pelvic organs and varicosis of the pubis, perineum, vulva, and buttocks. The clinical, ultrasound and phlebographic appearance of small pelvis varicosis is described in detail.