To investigate the ultrasonographic features and diagnostic value of obstructive cervical dysplasia.

Twelve patients with obstructive cervical dysplasia diagnosed and treated at West China second University Hospital, Sichuan University from January 2014 to December 2021 were reviewed. The ultrasonographic features were summarized, and the diagnostic value of ultrasound for obstructive cervical dysplasia as well as the diagnosis of related complications were analyzed.

For obstructive cervical dysplasia, 8 cases of obstructive cervical dysplasia were correctly diagnosed by ultrasound based on the postoperative diagnostic standard, and 4 cases was misdiagnosed, with a diagnostic accuracy of 66.7% (8/12). The misdiagnosed cases included 1 case of undeveloped cervix, 2 cases of external cervical orifice occlusion, and 1 case of cervical remnant. For vaginal atresia, according to the intraoperative findings, a total of 11 patients had vaginal atresia, including 9 cases of complete vaginal atresia and 2 cases of upper vaginal atresia. Preoperative ultrasound correctly diagnosed vaginal atresia in 8 cases and missed 3 cases, with a diagnostic accuracy rate of 72.7% (8/11). In addition, according to the postoperative diagnosis, 5 cases of unilateral or bilateral tubal hemorrhage were correctly diagnosed by ultrasound, 3 cases were missed, and 1 case was misdiagnosed. 5 cases of ovarian endometriotic cyst were diagnosed by ultrasound, and 1 case was misdiagnosed.

Ultrasonography can show the shape of the cervix, concomitant uterine malformation, vaginal atresia, and the adnexa, representing the first choice for the examination of obstructive cervical dysplasia.