Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable single frontal chest radiograph was obtained with the patient in upright position . The patient is status post extubation and removal of the Swan - Ganz line . There has been interval removal of a left chest tube with no pneumothorax . There is volume loss in the left lower lobe with elevation of the left hemidiaphragm . Slight blunting of the right costophrenic angle could represent a small pleural effusion . The cardiomediastinal silhouette is stable in the postop period .
    OUTPUT:
    
1 . Left lower lung volume loss with elevation of the left hemidiaphragm . 2 . Small right pleural effusion .