Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . There is opacification of the right lower lobe silhouetting the diaphragm . The lungs are otherwise clear . There is severe cardiomegaly with unchanged mild pulmonary vascular congestion but no pulmonary edema . Cardiomediastinal hilar silhouettes are grossly unremarkable . Incidental note is made of superior subluxation of the right humeral head , which is unchanged and likely related to chronic rotator cuff pathology .
    OUTPUT:
    
1 . Probable right lower lobe pneumonia . 2 . Severe cardiomegaly without evidence of pulmonary edemaedema .