Flask shaped heart is seen in –

Pericardial effusion. ***Pericardial effusion*** - A **"flask-shaped"** or **"water bottle-shaped" heart** on chest X-ray is a classic finding in significant pericardial effusion. - This appearance results from the accumulation of a large amount of fluid in the **pericardial sac**, which causes the cardiac silhouette to enlarge symmetrically and assume a globular shape. *TOF (Tetralogy of Fallot)* - TOF typically presents with a **"boot-shaped" heart** (coeur en sabot) on chest X-ray due to right ventricular hypertrophy and a concave pulmonary artery segment. - This morphology is distinctly different from the flask-shaped appearance of pericardial effusion. *Ebstein anomaly* - Ebstein anomaly is characterized by apical displacement of the tricuspid valve, leading to **massive right atrial enlargement**. - On chest X-ray, this often results in a **markedly enlarged oval-shaped heart**, which can be quite massive but does not typically have the distinct flask/water bottle shape. *TAPVC (Total Anomalous Pulmonary Venous Connection)* - TAPVC can present with different X-ray findings depending on the type, but a classic finding for the supracardiac type is a **"snowman" or "figure-of-8" heart** in children. - This appearance is due to the dilated superior vena cava and anomalous veins draining to it, not a flask shape.

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NEET-PG 2013 — Radiology

41 Questions — Page 5 of 5

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