Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . Large body habitus and underpenetrated technique limits assessment . Allowing for technical limitations , the lungs are clear . Heart is mildly enlarged . Mediastinal contour is normal . No large effusion or pneumothorax . Bony structures are intact .
    OUTPUT:
    
Mild cardiomegaly . No overt signs of edema or pneumonia .