Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable semi upright view of the chest . Ill - defined opacities in the lower lungs may reflect pneumonia or aspiration . Additionally , a more band like opacity in the left lower lung is most compatible with atelectasis . No large effusion is seen . No large pneumothorax . The aorta is unfolded . The heart appears top - normal in size . Prominent calcifications in the base of neck likely vascular . No acute bony abnormalities .
    OUTPUT:
    
Lower lung opacities concerning for pneumonia or aspiration , likely in combination with atelectasis .