Radiology General 3fb33dd7 Cause of posterior mediastinal opacity on PA and lateral view of chest x- ray A Bochdalek's hernia B Lymph node mass C Tortuous innominate artery D Aneurysms High-Yield Explanation Anterior mediastinum - Thymona Muddle mediastinum - Tortuous innominte artery Posterior mediastinum - Bochadalek's hernia