Giant dilated left atrium on Echocardiogram (a4c) It belongs to a 92-year old lady with a history of hypertension and a pacemaker. MR was only mild. Mitral valve doesn’t look typical rheumatic and patient is in sinus rhythm... 1. This can be LA aneurysm idiopathic. 2. Long chronic severe MR 3. ASD with R/L shunting which is rare. Ivan Stankovic, MD, PhD @Ivan_Echocardio #Giant #dilated #left #atrium #a4c #Echocardiogram #clinical #cardiology #pocus