Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are low lung volumes . The cardiac , mediastinal and hilar contours are within normal limits . There is crowding of the bronchovascular structures , but no pulmonary edema is seen . Calcified right upper lobe nodule is unchanged . Biapical fibrotic changes are stable . Lungs are otherwise clear without focal consolidation . No pleural effusion or pneumothorax is identified . No acute osseous abnormality is seen .
    OUTPUT:
    
No acute cardiopulmonary process .