This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Radiology
Egg in cup appearance is seen in - 
Select and explain. 
A. TOF, B. MR, C. Constrictive pericarditis, D. Transposition of great vessels
C: Constrictive pericarditis
Answer: C: Constrictive pericarditis 
Explanation: Egg in cup apperance is seen in constrictive pericarditis. Egg on side appearance is seen in TGA.