Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size is normal . The aorta is mildly unfolded . Hilar contours are unremarkable . There is diffuse chronic interstitial abnormality , most severe in the right lower lobe . This is characterized by traction bronchiectasis and parenchymal scarring . No pleural effusion , pulmonary edema , or pneumothorax is present . There is no acute osseous abnormality .
    OUTPUT:
    
Chronic interstitial lung disease with fibrotic changes , compatible with the patient 's history of sarcoidosis . Evaluation for acute superimposed process is limited in the absence of direct comparison with prior exams .