Abnormalities of the uterus include septate uterus, unicornuate uterus, retroverted uterus, didelphic uterus and fibroids, according to the March of Dimes. Some uterine abnormalities do not cause obvious signs or symptoms until a women is pregnant, while other abnormalities make conceiving difficult.
A septate uterus is the most common type of congenital uterine abnormality, states the March of Dimes. This condition causes the uterus to be divided into two distinct sections, leads to repeated miscarriage and requires surgery to repair. A unicornuate uterus, or one-sided uterus, occurs when only half of the uterus forms. Surgical intervention does not help this condition, as the uterus cannot be made any larger.
A retroverted uterus occurs when the uterus is tipped backwards rather than forwards, explains the March of Dimes. This condition is fairly common and occurs in approximately 20 percent of women. A retroverted uterus is a condition that a woman may be born with or develop, but it rarely causes pregnancy complications. A didelphic uterus or double uterus occurs when there are two separate uteri present, each with a cervix.
Fibroids are noncancerous growths that occur in the uterus, according to the March of Dimes. These growths are made of muscle tissue. Large fibroids can cause infertility, preterm labor, placental abruption, miscarriage and heavy bleeding upon giving birth.