This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
Nitabuch'slayer is absent is 
Select and explain. 
A. Placenta accrete, B. Placenta pre, C. Placenta membranacia, D. Circumvallate placenta
A: Placenta accrete
Answer: A: Placenta accrete 
Explanation: Ans is 'a' i.e., Placenta accreteNitabuchs layerDuring formation of placenta, there is an area of fibrinoid degeneration where trophoblast cells (covered with syncytium) meet the decidua. This zone is known as Nitabuch's layer. This layer limits fuher invasion of the decidua by the trophoblast. Note: This membrane is absent in placenta accreta.