Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Evaluation of the lung bases is limited ( particularly the left base ) due to overlying soft tissue attenuation . The heart is enlarged but stable on this AP radiograph . There is mild pulmonary vascular congestion as well as likely mild CHF . There is no pneumothorax . There may be a small to moderate left pleural effusion however evaluation is limited due to soft tissue attenuation .
    OUTPUT:
    
Likely small to moderate left effusion with mild CHF . Overlying soft tissue limits evaluation of the lung bases .