Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac and mediastinal contours are normal . The heart remains moderately enlarged . There is mild blunting of the left costophrenic angle , again seen , which may reflect pleural thickening or small pleural effusion . Vague opacities within the right - mid lung may represent atelctasis or early pneumonia . There is no pneumothorax or findings for pulmonary edema .
    OUTPUT:
    
Right mid lung opacity may be atelctasis but could be early pneumonia in the right clinical setting .