The following gynecological diseases may affect the delivery: 1. Vaginal abnormalities, such as transverse vaginal septum, longitudinal vaginal septum, vaginal mass, may prevent the descent of the fetal first dew. 2. Cervical abnormalities, such as cervical adhesions and scarring, cervical toughness, cervical edema, cervical cancer affecting cervical dilation, may cause cervical laceration. 3. 4. pelvic tumors, such as lower uterine fibroids or cervical fibroids that block the entrance to the pelvis and prevent the descent of the fetal dew. If these conditions exist, a cesarean section may be performed to terminate the pregnancy.