Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest were provided . There is a new subtle retrocardiac opacity which is concerning for pneumonia in the correct clinical setting . An eventration of the right hemidiaphragm is noted . No pleural effusions are present . There is no pneumothorax . The cardiomediastinal silhouette is stable with an unfolded thoracic aorta . Bony structures are intact .
    OUTPUT:
    
Findings concerning for an early left lower lobe pneumonia .