Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size mildly unchanged . The aorta appears mildly tortuous but unchanged . The hila bilaterally appear prominent which may reflect enlarged pulmonary arteries . Lungs are hyperinflated with suggestion of emphysematous changes in the apices . Mild pulmonary vascular congestion is present without overt pulmonary edema . Small bilateral pleural effusions are noted . More focal ill - defined opacity is seen within the left mid lung field . No acute osseous abnormalities detected .
    OUTPUT:
    
1 . Ill - defined focal opacity in the left mid lung field . This may reflect an area of infection , however followup radiographs are needed to ensure resolution of this finding after treatment as neoplasm can not be excluded . 2 . Small bilateral pleural effusions and mild pulmonary vascular congestion .