Ectopic Pregnancy in a Non-communicating Rudimentary Uterine Horn: A Case of Successful Medical Management and Literature Review

A non-communicating rudimentary uterine horn is a Müllerian abnormality that manifests due to abnormal Müllerian duct development. This abnormality is associated with endometriosis, infertility, and pregnancy complications, including ectopic pregnancy, abnormal fetal presentation, abruption, increased fetal mortality and morbidity, preterm rupture of membranes, preterm birth, intrauterine growth restriction, and uterine rupture. If pregnancy does occur, there is a high risk of complications, most notably rupture of the rudimentary horn. For this reason, such pregnancies are managed similarly to an ectopic pregnancy with either administration of methotrexate, laparoscopic removal, or a combination of both. This article describes a case of a pregnancy in a previously diagnosed, non-communicating rudimentary uterine horn that was managed medically. We aim to explore the need for early identification of rudimentary uterine horns and the management of pregnancy in these individuals.