Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are normal . There is no focal airspace consolidation , effusion or pneumothorax . Pulmonary vasculature is normal and there is no overt pulmonary edema . Mediastinal and hilar contours are stable . Allowing for differences in technique , moderate cardiomegaly has increased and is now substantial . In the absence of pulmonary vascular congestion or signs of cardiac decompensation , this could indicate cardiomyopathy or pericardial effusion .
    OUTPUT:
    
1 . No evidence of cardiac decompensation . 2 . Significant cardiomegaly , in the absence of vascular congestion or overt pulmonary edema , suggests cardiomyopathy or pericardial effusion . If there is persistent clinical concern , echocardiography for further evaluation could be considered . 3 . Focal opacity at the right costophrenic angle , potentially atelectasis or small effusion .