Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable upright frontal view of the chest . Dual chamber pacer is noted . The aortic knob is calcified . Moderate to severe cardiomegaly is stable . There is no focal consolidation or overt pulmonary edema . Tiny right pleural effusion , if any . No left pleural effusion or pneumothorax .
    OUTPUT:
    
Stable cardiomegaly . No overt pulmonary edema or focal opacity . Tiny right pleural effusion , if any .