spontaneous heterotopic pregnancy: case report and literature review

Heterotopic pregnancy, a rare form of pregnancy, can occur simultaneously intrauterine and extrauterine. this can be a life-threatening condition and can be easily overlooked if undiagnosed. the patient was a 27-year-old woman, gravid3, para1, live1 and abortion1, at 10 weeks and 1 day by last menstrual period who went to the emergency room complaining of pain in the lower abdomen form 3 days ago. pelvic ultrasound revealed both live intrauterine and extrauterine pregnancy by gestational age based on the crown-rump length diameter, 9 weeks and 3 days with moderate to severe hemoperitoneum. the heterotopic pregnancy diagnosis is difficult and requires a high index of suspicion.