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
Flask shaped hea is seen in - 
Select and explain. 
A. Ebstein anomaly, B. Pericardial effusion, C. TOF, D. TAPVC
B: Pericardial effusion
Answer: B: Pericardial effusion 
Explanation: Flask shaped hea / Pear shaped / Money shaped hea is seen in Pericardial effusion. Boot shaped / Coer-en-sabot hea is seen in TOF. Snowman hea / Figure of 8 appearance is seen in TAPVC. Pulmonary oligemia is an xray finding of Ebsteins anamoly.