Abstract: Uterine cervical Naboth cyst is a common benign disease of gynecology, and it is caused by the damage to the cervix like childbirth, inflammation and artificial abortion. The diameter of the small cervical cysts varies from a few millimeters to 4 centimeters, which can be single or multiple. Most patients do not have self-conscious symptoms. Big cysts are rare and patients may have discomforts during sexual intercourses. Clinically preoperative identification of the large uterine cervical Nabothian cysts is very important. Differentiation from cervical malignant disease can help avoid expanding the scope of surgery and improve the postoperative qualities of lifes of patients. Large Naboth cysts are easily confused with mullerian duct cysts and cervical malignant adenomas before operation. Ultrasound examination has no absolute diagnostic value. The etiology of large cervical Naboth cysts is unclear. A case of pregnancy to term delivery with complete mediastinal uterus is reported. Whether there is a relationship between the incidence of large uterine Naboth cysts and uterine congenital malformations remains to be studied.

Key words: Uterine cervical diseases；Nabothian cyst；, Cysts；, Complete septate uterus；, Vaginal septum；, Urogenital abnormalities；, Diagnosis；, Therapy