Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Bilateral heterogeneous lung opacities , predominantly involving the lung bases , right more than left , are slightly improved from ___ and are presumably sequela of the patient 's known chronic sarcoidosis . There is no pleural effusion or pneumothorax . Heart is normal size . Mediastinal hilar contours are unremarkable .
    OUTPUT:
    
Slight improvement in the bilateral heterogeneous lung opacities from ___ , presumably sequela of the patient 's known chronic sarcoidosis .