Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Suboptimal patient positioning and low lung volumes . Blunting of the left costophrenic angle may reflect pleural thickeing or small effusion . No localized consolidation . Mild cardiomegaly . No pneumothorax . No pulmonary
    OUTPUT:
    
Blunting of the left costophrenic angle may reflect pleural thickeing or small effusion .