Naturally conceived heterotopic pregnancy: an atypical presentation rare case report and review of current literature.

Heterotopic pregnancy (HP) is the coexistence of living or dead intrauterine pregnancy, single or multiple, and extrauterine pregnancy located in the oviduct, ovary, uterine corner, cervix or peritoneal cavity. This condition is very rare (1:30 000 pregnancies). HP constitutes a rare obstetric condition. Its occurrence after natural conception is sparsely documented in the literature. Here in, we present a case of a 27-year-old primeparous women who presented at 18 weeks with features of ruptured ectopic pregnancy. Initial ultrasonographic imaging showed an intrauterine pregnancy corresponding to 18 weeks. It also revealed a floating fetus with significant collection of fluid in the pouch of Douglas, retroceacal recess and both hepatocellular recess. An emergency explorative laparotomy was done where right salpingectomy was performed. She was later followed up to term and delivered by elective cesarean section successfully. A brief narrative of the challenges in the management, clinical presentation and limitation in the management is highlighted in the present case report. Heterotopic pregnancy can occur in natural conception irrespective of usage of ovulation induction. Routine early pregnancy ultrasound can promote early detection with prompt surgical intervention to mitigate its complications.