Most commonly a<unk>  may be obstructed due to infection such as pelvic inflammatory disease (PID). The rate of tubal infertility has been reported to be 12% after one, 23% after two, and 53% after three episodes of PID. The<unk> <unk> s may also be occluded or disabled by endometritis, infections after childbirth and intra-abdominal infections including appendicitis and peritonitis. The formation of adhesions may not necessarily block a<unk> <unk> , but render it dysfunctional by distorting or separating it from the ovary. It has been reported that women with distal tubal occlusion have a higher rate of HIV infection.<unk> <unk> s may be blocked as a method of contraception. In these situations<unk> s tend to be healthy and typically patients requesting the procedure had children. Tubal ligation is considered a permanent procedure.
Fallopian tube obstruction
Primary ovarian insufficiency
Mullerian anomalies
Blighted ovum
Gonadal tissue neoplasm
Anovulation
Male accessory gland infection
Ovarian remnant syndrome