Last MCQ Answer - B. Atherosclerosis. Widened mediastinal silhouette, increased aortic knob, and tracheal deviation seen in the chest x-ray image is suggestive of thoracic aortic aneurysm., etiology being Atherosclerosis.

A 5-year-old boy is brought to the hospital after a resuscitated cardiac arrest due to ventricular fibrillation. A chest x-ray reveals cardiomegaly, and EKG reveals Q waves in precordial leads. Transthoracic echocardiography reveals a dilated and hypokinetic left ventricular anterior wall, moderate mitral regurgitation, and dilated right coronary artery. Cardiac MRI reveals prominent collaterals in left coronary artery distribution with the right to left flow and left ventricular anterolateral subendocardial myocardial fibrosis. Cardiac catheterization shows the contrast directly emptying into the left ventricle upon left coronary intubation. The most common etiopathogenesis of this phenomenon is related to the etiopathogenesis of which of the following conditions?

1.Patent ductus arteriosus
2. Coronary AV fistula
3.Aortic dissection following blunt chest trauma
4.Coronary artery disease

Enrol to Revision series to get access. Subscribe here today - and get access to QuickLearn, GT and Daily tests in addition to Patho Videos