Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The mediastinal and hilar contours are normal . The pulmonary vasculature is normal . Heterogeneous opacities in the lower lungs have apparently progressed since ___ chest radiograph , . No pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
Apparent progression of heterogeneous bibasilar lung opacities since ___ , corresponding to areas of increased lung parenchymal signal on recent MRI . Chest CT is recommended for further characterization to exclude a progressive fibrotic lung disease or slow growing lung adenocarcinoma .