Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Normal heart size , mediastinal and hilar contours . No focal consolidation , pleural effusion or pneumothorax . Innumerable dense pulmonary nodules appear unchanged from prior , the largest a 7 mm nodule in the left lower lobe consistent with prior granulomatous exposure .
    OUTPUT:
    
No acute process .