Twin Pregnancy with Theca Lutein Cysts: Causes, Risks & Management
Twin pregnancies present unique physiological and clinical challenges, particularly when they involve a monochorionic diamniotic (MCDA) placentation and maternal ovarian changes such as bilateral theca lutein cysts (TLCs). MCDA twins share a single placenta but have two separate amniotic sacs. This type of twinning arises due to a single fertilized egg splitting between 4–8 days post-fertilization. When coupled with the development of theca lutein cysts, it raises concerns about maternal and fetal well-being. Understanding Monochorionic Diamniotic Twin Pregnancy MCDA twin pregnancies account for approximately 70% of all monozygotic (identical) twin pregnancies. The shared placenta predisposes these pregnancies to several complications, including: Twin-Twin Transfusion Syndrome (TTTS) – An imbalance in blood flow between the twins. Twin Anemia-Polycythemia Sequence (TAPS) – Chronic, slow transfusion from one twin to the other. Selective Intrauterine Growth Restriction (sIUGR) – Une...