Ectopic ovarian gestation and β subunit of negative chorionic gonadotropin, is it possible? Report a rare case

Ovarian ectopic gestation occurs when fetal tissue implants outside the uterine cavity. Implantation is usually tubal; Ovarian localization has an incidence of less than 1%. The diagnosis is confirmed by ultrasonography and the β subunit of chorionic gonadotropin in urine or blood; But its negativity doesn’t rule out the diagnosis. We present the case of a 19-year-old nulliparous patient with pelvic pain, with no significant history. Ultrasound revealed a 65 mm right ovary tumor. The β subunit value of chorionic gonadotropin was 3 mIU/L. The operative findings were: 100 cc hemoperitoneum, ruptured right ovary cyst of 6 x 4 cm ruptured, ectopic pregnancy of 7 weeks of gestation in Douglas sac fundus and phlegmonous appendix. The anatomopathological study reflected: moderate periappendicitis, right ovary with inflammation, neovascularization, vascular congestion, recent hemorrhage and ovarian ectopic pregnancy