Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral chest radiographs demonstrate clear lungs bilaterally . Heart is moderately enlarged , though this appears similar relative to prior examination and probably exaggerated by technique . There is no evidence of pulmonary edema . There is no pleural effusion or pneumothorax . No air under the right hemidiaphragm is identified .
    OUTPUT:
    
Cardiomegaly without evidence of pulmonary edema . No acute intrathoracic abnormality identified .