Heterotopic pregnancy in natural conception -- our initial experience: case report.

Heterotopic pregnancy refers to the presence of simultaneous pregnancies at two different implantation sites. Heterotopic pregnancy is rare, estimated to occur in 1 per 30,000 pregnancies. We report a case of a 27-year-old woman presented to the emergency department with the diagnosis of ruptured ectopic pregnancy. Careful ultrasound assessment indicated the diagnosis of heterotopic pregnancy. Right salpingectomy with removal of the hemoperitoneum and suction curettage were performed. Our operative diagnosis of heterotopic pregnancy was confirmed by histopathology. Heterotopic pregnancy can occur in the absence of any predisposing risk factors, and the detection of intrauterine pregnancy does not exclude the possibility of the simultaneous existence of ectopic pregnancy. Transvaginal ultrasound and assessment of the whole pelvis, even in the presence of intrauterine pregnancy, can be an important aid in the diagnosis of heterotopic pregnancy.