Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . There is been interval removal of the left chest tubes and right PICC line . Right lung remains clear . There is decreased left basal opacity which remains concerning for pneumonia / atelectasis and small left pleural effusion . No congestion or edema . No pneumothorax . Heart size difficult to assess . Mediastinal contour is normal . Bony structures are intact .
    OUTPUT:
    
Left basal opacity , slightly improved from prior likely reflecting persistent small effusion and left basal consolidation which may represent atelectasis and / or pneumonia .