Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . There is biapical scarring , worse on the right . Indistinct pulmonary vascular markings are seen , particularly at the bases . Assymetric right mid to basilar opacity is also seen . There is a small right - sided pleural effusion and moderate cardiomegaly . No acute osseous abnormality is identified . Probable coronary artery stent identified .
    OUTPUT:
    
Mild pulmonary edema . Asymmetric right mid to lower lung opacity may be due to asymmetric edema although superimposed infection is possible .