Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size , mediastinal and hilar contours are normal . A subtle area of increased opacity is present overlying the lower thoracic spine on the lateral view , with associated slight indistinctness of the left hemidiaphragm , a change from it s sharp contour in ___ . Lungs are otherwise clear . Biapical thickening is similar to older radiographs from ___ and attributed to scarring . There are no acute skeletal abnormalities .
    OUTPUT:
    
Subtle left lower lobe opacity suspicious for an early focus of pneumonia . Consider followup radiographs in four to six weeks to ensure resolution . Recommendation entered into radiology communications dashboard on ___ .