Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright chest radiograph was provided . Evaluation is markedly limited due to low lung volumes . Subtle nodular opacity obscures the left mid to lower lung which could reflect aspiration in the correct clinical setting . Bronchovascular crowding likely accounts for subtle streaky opacity in the right lower lung . No pneumothorax or large effusion is seen . Heart size can not be assessed . Mediastinal contour appears grossly stable allowing for technique . The bony structures are intact .
    OUTPUT:
    
Markedly limited exam with subtle nodular opacity in the left mid to lower lung which could represent aspiration in the correct clinical setting .