Frontal chest radiograph displays combined partial atelectasis of the right upper lobe and complete atelectasis of the right lower lobe

Increased opacification of the right paratracheal region, obscuration of the right descending pulmonary artery, and mediastinal shift to the right are evident. The residual hyperlucent right lung is formed by hyperexpansion of the right middle lobe and parts of the aerated right upper lobe.