Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild - to - moderate cardiomegaly is again seen . Calcification in the aortic knob and mitral valve annulus are again noted . Right pleural thickening is stable in appearance , and likely represents scarring . There is a small left pleural effusion . There is no pneumothorax . Increased interstitial markings with more dense opacification of the right lung base is consistent with infection . Additionally , there are several nodular opacities projecting over the lingula , which may also be infectious in etiology . No nondisplaced rib fractures are present .
    OUTPUT:
    
Small left pleural effusion with multiple new densities and increased interstitial markings throughout , concerning for a multifocal infectious process with superimposed mild pulmonary edema .