Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart is normal in size . Aorta is tortuous without change . Pulmonary vascularity is within normal limits . Lungs are clear except for linear atelectasis or scarring at the left lung base , accompanied by small left pleural effusion or pleural thickening . No acute skeletal abnormalities .
    OUTPUT:
    
No evidence of congestive heart failure . Linear left basilar scar / atelectasis with adjacent left pleural thickening or small effusion .