Heterotopic pregnancy: a case report

Case Report of an exceptional spontaneous abdominal heterotopic pregnancy with superfetation: Diagnosis and treatment: Heterotopic pregnancy with superfetation (8+1 WG & 5+4 WG)

Heterotopic pregnancy is an extremely rare condition in which an intrauterine and an extrauterine pregnancy co-exist. In spontaneous conceptions, heterotopic pregnancy occurs in only 1/30 000 pregnancies. The treatment of heterotopic pregnancy must be as minimally invasive as possible to preserve the development of the intrauterine pregnancy. Superfetation, defined as the coexistence of 2 or more foetuses of different gestational ages, remains particularly exceptional and poorly explained (second ovulation? embryonic diapause?). Here, we present an extremely rare case of a spontaneous heterotopic evolutive pregnancy with superfetation, consisting of an embryo in the pouch of Douglas estimated at 8 + 1 weeks of gestation (WG) and a progressive intrauterine pregnancy estimated at 5 + 4 WG. We treated the extrauterine pregnancy with an intra-cardiac injection of potassium chloride echo-guided via the vaginal route, and the patient then underwent exploratory laparoscopy 9 days later and lavage and aspiration of the abdominal heterotopic pregnancy due to pain and biological inflammatory syndrome probably caused by pelvic mass syndrome and peritoneal irritation from the foetal necrosis. She has not yet given birth and is currently at 36 WG.

A unique case of coexisting intrauterine and abdominal pregnancy which progress to term with a positive birth outcome

BACKGROUND

The term heterotopic pregnancy is defined as a uterine pregnancy coexisting with a second pregnancy in an extrauterine location. Spontaneous, full-term heterotopic pregnancy with alive birth is very rare. The diagnosis and management of such exceptionally unique case is difficult. When the patient presented with an advanced labor with no antenatal care follow up and with no risk factors is even more challenging for poorly equipped facilities like ours.

CASE PRESENTATION

A 25 years old gravida 3, para 2 (both are alive) mother presented to the labor and delivery ward of Bele Primary Hospital, Southern Ethiopia with the complaint of pushing down pain of 18 h duration. Immediately after arrival, she gave birth to a 3300gm female neonate spontaneously. After delivery, an abdominal mass was recognized and manual exploration of the uterus was done to look for the presence of after coming second twin but the uterus was empty. On ultrasound examination, there was an alive fetus in transverse lie outside the uterus. With the impression of 2nd twin in a separate horn of bicornuate uterus and to rule out abdominal pregnancy, laparotomy was done. On laparotomy, there was abdominal pregnancy in the Pouch of Douglas with an intact amniotic sac. The sac was attached with the left broad ligament, left ovary, small bowel mesentery, and posterior wall of the uterus. The sac opened, a 1600gm alive female neonate with features of fetal growth restriction and left club foot was delivered. The placenta was detached spontaneously and removed without any complication.

CONCLUSIONS

The coexistence of spontaneous full-term intrauterine with advanced abdominal ectopic pregnancy is one of the rarest forms of heterotopic pregnancy. Every health professional should bear in mind that intrauterine and extrauterine pregnancy may happen simultaneously and it can progress to term without any symptoms. Ultrasound is the diagnostic method of choice but the existence of an intra-uterine pregnancy cannot rule out ectopic pregnancy. The life-threatening complication of abdominal ectopic pregnancy is bleeding from the detached placental site. Therefore, the decision to remove the placenta should be individualized.