Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable semi upright view of the chest . No free air is seen below the right hemidiaphragm . Underpenetrated technique limits the evaluation . Allowing for this , there is no definite sign of pneumonia or overt CHF . No large effusion or pneumothorax is seen . Heart size appears mildly enlarged . Mediastinal contour is unremarkable . Bony structures appear intact .
    OUTPUT:
    
Mild cardiomegaly . No overt signs of edema or pneumonia . No free air below the right hemidiaphragm .