Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild pulmonary vascular congestion . The heart is moderately enlarged , unchanged compared to prior study . Small left pleural effusion is noted . No pneumothorax is seen . Severe degenerative changes of the right shoulder again noted .
    OUTPUT:
    
Mild pulmonary vascular congestion and small left pleural effusion . No evidence of pneumonia .