Radiology Which among the following are a cause of posterior mediastinal opacity on Posterior-Anterior (PA) and lateral view of chest radiograph? A Tortuous innominate artery B Bochdalek's Hernia C Enlarged pulmonary artery D Thymoma 💡 Explanation Which among the following are a cause of posterior mediastinal opacity on Posterior-Anterior (PA) and lateral view of chest radiograph? ✓ Correct Answer: B. Bochdalek's Hernia