Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Stable well - marginated area of increased opacity overlies the apical region of the left lung , and could potentially continue beyond the confines of the left apex . Additionally , a second area of asymmetrical increased opacity is present just below this region at the level of the first anterior rib and medial left clavicle . Lungs are otherwise clear . Cardiomediastinal contours are normal . There are no pleural effusions or acute skeletal structures .
    OUTPUT:
    
Asymmetrical area of increased opacity overlying left lung apex , potentially external to the patient . A followup apical lordotic radiograph with repositioning of the patient area removal of any external structures would be helpful for initial further evaluation , particularly to exclude left apical infectious pneumonia or other acute lung process .