The uterine appendages in 87 females aged from 17 to 53 years were surgically removed because of inefficacy of conservative treatment for purulent inflammation. There were signs of chronic recurrent inflammation in the uterine tubes or in the tubes and ovaries as shown by the operative material studied light and electron microscopically, immunomorphologically. Immune mechanisms as well as structural changes (reduction, vasculitis) of the vascular bed and muscular layer (sclerosis) of the tubes played a role in the pathogenesis of chronic inflammation. The detection of the antibodies against Chlamydobacterials in 60% of the patients implies their role in pathogenesis of chronic inflammation of the uterine appendages.