Ectopic ovarian pregnancy after intracytoplasmic sperm injection with testicular spermatozoa - a case report

Ultrasound Classification and Preoperative Ultrasound Diagnosis Analysis of Ovarian Ectopic Pregnancy

OBJECTIVES

A classification system of ovarian ectopic pregnancies (OEP) could aid in their management. This study aimed to investigate the ultrasound classification and preoperative ultrasound diagnosis of OEP.

METHODS

This retrospective case series study analyzed the clinical and ultrasound imaging data of 68 pregnant women diagnosed and confirmed with OEP at the Obstetrics and Gynecology Hospital affiliated with Tongji University between January 2015 and March 2023. The study focused on examining the ultrasound characteristics of different types of ovarian pregnancies and the accuracy of preoperative ultrasound diagnoses.

RESULTS

The study included 68 patients with a median age of 30 (22-47) years. There were 43 cases (63.2%) of ruptured OEP and 25 (36.8%) of unruptured OEP. The unruptured cases were subclassified as embryonic sac type (n = 16) and heterogeneous mass type (n = 9). Preoperative ultrasound accurately diagnosed 19 cases (27.9%) of OEP, including 10 (62.50%) of the embryonic sac type, 4 (44.44%) of the heterogeneous mass type, and 5 (11.63%) of the ruptured type. Preoperative ultrasonography showed that embryonic sac type OEP was characterized by an intra-ovarian cystic structure with a distinctive hyperechoic ring and, in some cases (8 out of 16), the presence of embryonic buds and/or yolk sacs. Ruptured OEP was characterized by mixed masses in the pelvic cavity with minimal or significant free pelvic fluid, an unclear boundary between the mass and the ovary, and limited or no vascularity.

CONCLUSIONS

Ultrasound may be used to determine the type of OEP preoperatively, with a higher diagnostic yield for the embryonic sac subtype. Preoperative ultrasonographic classification may enhance the preoperative diagnosis of OEP.

[Ovarian pregnancy case study and literature review]

Ovarian pregnancy is a rare entity among ectopic pregnancies. Its diagnosis and management are not always easy. It is a particular pathology, the clinician is confronted with a poor clinical semiology and a difficult ultrasound diagnosis. The surgical criteria remain difficult to prove. We have compiled a case of ovarian pregnancy. The patient consulted our emergency room for pelvic pain, metrorrhagia and amenorrhea of nine weeks. The preoperative diagnosis was evoked by ultrasound which showed a right latero uterine image of 7*8cm at the expense of the right ovary. An emergency laparotomy was performed. Surgical treatment was radical after the failure of conservative treatment. Ovarian pregnancy is a rare entity of ectopic pregnancy which presents certain semiological peculiarities. Its diagnosis is difficult and is based on intraoperative findings. Its therapeutic management remains for the treatment of ectopic pregnancies, despite the progress of medical and surgical treatment.