Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Previously seen left parenchymal opacity has resolved . Lungs are now clear without effusion , edema or consolidation . Right apical pleural based opacity with superior retraction of the right hilum is most compatible with scarring as identified on previous exams . The cardiomediastinal silhouette is stable . Portions of the right clavicle are not visualized . No acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary process .