Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are poorly expanded , accounting for vascular crowding . The right lung does not demonstrate any focal opacities . The left lung apex demonstrates an ill - defined opacity projecting over the posteromedial aspects of the second and third ribs . No other focal opacities are noted on the left . Cardiomediastinal and hilar contours are unremarkable . There is no pleural effusion or pneumothorax . There is no evidence of abdominal free air .
    OUTPUT:
    
Focal opacity in the left apex might represent summation of structures , and it could be further evaluated with AP lordotic view to assess for underlying opacity .