Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs were obtained . There is an ill - defined , non-calcified focal opacity in the left mid lung . The lungs are otherwise well expanded with no other consolidations . The cardiomediastinal silhouette , hilar contours , and pleural surfaces are normal . There is no rib fracture .
    OUTPUT:
    
Ill - defined focal opacity over the left mid lung . Findings were discussed with Dr .___ ___ telephone at 4 pm on ___ and in this patient with a smoking history , follow - up imaging with CT scan is recommended .