Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient has undergone prior right mastectomy and axillary dissection . The cardiomediastinal silhouette and pulmonary vasculature are unchanged since the prior examination . Calcifications projecting over the right mid and upper lung have been demonstrated to be pleural based and are unchanged since the prior examination . Again noted is right upper lobe scarring with volume loss . There is no pleural effusion or pneumothorax . No definite focal consolidation is identified .
    OUTPUT:
    
No acute intrathoracic abnormality .