Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mildly hypoinflated lungs with bibasilar atelectasis and crowding of vasculature . No pleural effusion or pneumothorax . There is a focal 1 cm nodular opacity projecting over the posterior right fifth rib at the lung apex . Stable mild cardiomegaly . Mediastinal contour and hila are unremarkable . Left - sided pacer device is again seen along the left anterior chest wall with 3 intact leads , unchanged since prior examination . Limited assessment of the osseous structures are notable for orthopedic hardware in the proximal left humerus .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . Low lung volumes with bibasilar atelectasis and crowding of vasculature . 3 . Right apical 1 cm nodular opacity for which dedicated , nonurgent chest CT is suggested .