Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP view of the chest provided . Compared to prior study , the cardiac silhouette has increased in size . There is also increased opacity in bilateral lung bases . These findings are suggestive of pulmonary vascular congestion . However , in view of the clinical history provided , these findings could also reflect multifocal pneumonia . Old deformity of the left clavicle is again seen .
    OUTPUT:
    
Bilateral lung base opacity , in association with increase in cardiac size , likely refecting pulmonary vascular congestion . However , given clinical history , multifocal pneumonia is also a possibility .