Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are noted . There is confluent opacity in the left lung base silhouetting the hemidiaphragm with additional patchy region slightly superior to the cardiac silhouette . Elsewhere the lungs are clear . The cardiac silhouette is enlarged but likely exaggerated by low lung volumes . Rightward tracheal deviation with increased soft tissue at the upper mediastinum is compatible with left - sided thyroid enlargement . No acute osseous abnormalities identified . Impression
    OUTPUT:
    
Newleft basilar opacity which could be infection in the proper clinical setting . PA and lateral suggested after treatment to document resolution and exclude underlying mass lesion .