Abstract

Objective: To investigate the MRI manifestations of congenital vaginal atresia, analyze its imaging features, and improve the understanding of the disease.Methods: MRI findings and clinical data of 12 patients with congenital vaginal atresia confirmed by hysteroscopy and laparoscopic surgery were retrospectively analyzed. Vaginal atresia was classified according to vaginal dysplasia in AFS female genital malformation classification system.Results: In this study, 12 cases of congenital vaginal atresia were diagnosed by combined preoperative MRI with operative diagnosis. Among them, 10 patients all had type-I congenital vaginal atresia, and their uterus and cervix were normal (1 patient had ectopic renal malformation combined with left ovarian endometriosis cyst and 1 patient with uterine empyema). The other two cases were diagnosed congenital vaginal atresia type II (1 case merged with residual uterus, 1 case with cervical dysplasia). MRI mainly manifested as dilatation and hemorrhage in the uterine cavity, cervical canal and vaginal upper segment. T1WI showed high signal, T2WI showed slightly lower and slightly higher signal. The dilated vagina was above the perineal level.Conclusion: MRI features of congenital vaginal atresia have certain characteristics. MRI cannot only accurately assess the type of vaginal dysplasia and its associated complications, but also make objective evaluation and diagnosis, so it can be used as the best effective preoperative image evaluation.

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