Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP semi-upright and lateral views of the chest were provided . Lung volumes are low . There is no convincing evidence of pneumonia or effusion . The heart size appears stable . The upper lungs are poorly assessed . Patient is slightly rotated to the right . The imaged osseous structures appear intact , though somewhat demineralized .
    OUTPUT:
    
No definite signs of pneumonia on this limited exam .