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A review of cardiomegaly, left atrial and right ventricular enlargement, mediastinal masses, and hilar enlargement. Video includes the following images (among others): Left atrial enlargement, downloaded from , originally posted by Alexandra Stanislavsky. Pericardial effusion, downloaded from , originally posted by Frank Gaillard. Multinodular goiter, downloaded from , originally posted by Hani Salam. Sarcoidosis, downloaded from , originally
