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
Hydrocephalus is detailed best antenatally by – 
Select and explain. 
A. X-ray abdomen, B. Amniocentesis, C. Clinical examination, D. Ultrasonography
D: Ultrasonography
Answer: D: Ultrasonography 
Explanation: The best method for diagnosis of hydrocephalus prenatally is ultrasound.
On ultrasound, the excess uid is rejected by ventriculomegaly