Heterotopic Pregnancy with Ipsilateral Adnexal Cyst Causing a Diagnostic Dilemma: A Case Report.

Physicians should consider a broad range of differential diagnosis in pregnant mothers who present with acute abdominal pain. Moreover, in the presence of an adnexal mass and hemoperitoneum, there is a need to maintain a low threshold for rare but life-threatening complications such as heterotopic pregnancy. The presence of an intrauterine gestation does not rule out extrauterine gestation. Thus, the presence of a viable intrauterine gestation should not stop physicians from carefully examining patients for the coexistence of an ectopic pregnancy.