This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: DNB 2018, Subject name: Gynaecology & Obstetrics
Which of the following antenatal complications may cause placentomegaly? 
Select and explain. 
A. Hypeension, B. Diabetes, C. Abruption, D. HIV
B: Diabetes
Answer: B: Diabetes 
Explanation: Placentomegaly- Causes Maternal causes: Diabetes Anemia and malnutrition Infections: TORCH , CMV, Parvo virus, syphilis. Fetal causes Hydrops fetalis: Rh incompatibility, ABO incompatibility, fetal cardiac failure Chronic intrauterine infections Umbilical vein obstruction H mole TTTS Placental causes Placental tumours: chorangioma