This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Pediatrics
Hilar dance on fluoroscopy is seen in 
Select and explain. 
A. ASD, B. VSD, C. PS, D. TR
A: ASD
Answer: A: ASD 
Explanation: . Ghai essential of pediatrics, eighth edition p.no:413 hilar dance on fluoroscopy due to vigorous pulmonary aery pulsations seen in ASD