This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiac and Pericardiac Imaging, Subject name: Radiology
[{'content': 'Box shaped heart is seen in which of the following condition: \nSelect and explain. \nA. Coaractation of aorta, B. Pericardial effusion, C. Tetralogy of fallot, D. Ebstein anomaly', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. (d) Ebstein anomalyRef: Pediatric radiology 1st ed/57* Ebstein anomaly is a congenital heart defect in which the septal and posterior leaflets of the tricuspid valve are displaced towards the apex of the right ventricle of the heart.* It causes atrialization of right ventricle.Radiographic Features In Different Congenital Heart Diseases:* Figure of \'8\' appearance or Snowman appearance: TAPVR (type I)* Egg on its side" or "Apple on a stem" appearance: TGA* Boot-shaped Heart" /Classic coer en sabot: TOF* Box/Balloon shaped heart: Ebstein Anomaly* \'3 sign\' on CXR: Coaractation of Aorta', 'role': 'assistant'}]