Proposal of the 3O (Obstruction, Ureteric Orifice, and Outcome) Subclassification System Associated with Obstructed Hemivagina and Ipsilateral Renal Anomaly (OHVIRA).

Abstract

To propose a "3O" (obstruction, ureteric orifice, and outcome) subclassification system associated with obstructed hemivagina and ipsilateral renal anomaly (OHVIRA). Retrospective case series. Xiangya Hospital, Central South University, Changsha, Hunan, China. A total of 26 women with obstructed hemivagina and ipsilateral renal anomaly (OHVIRA) over a 9-year period. Not applicable. In all cases, the obstruction, ureteric orifice, outcome and surgical strategy were reviewed. In our study, the "obstruction" category included 14 cases of blind hemivagina, 8 cases of buttonhole septum, 3 cases of cervical fistula, and 1 case of cervical atresia. A total of 25 patients with vaginal obstruction underwent resection of the vaginal septum. The patient with cervical atresia underwent a failed cervicoplasty, followed by hemi-hysterectomy. The "ureteric orifice" category included 24 cases of absent ureter with no orifice, as well as 2 cases of ureteric orifice emptying into the obstructed hemivagina. The 2 patients were treated with laparoscopic extirpation of the ectopic ureter and renal moiety. Regarding the "outcome" category, 5 patients with severe recurrent hematometra, hematosalpinx, and ovarian endometrioma underwent hemi-hysterectomy, salpingectomy, and cystectomy of the ovarian endometrioma. Both patients (1 with a septate uterus and 1 with a bicornuate uterus) who experienced recurrent abortion accepted uterine correction. We provide new insights into the anatomical variants of this rare syndrome with the relevant surgical implications. Magnetic resonance imaging is the most useful tool in 3O diagnosis.