Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left - sided volume loss related to left upper lobectomy is noted . There may be mild pleural thickening on the left . There is no pneumothorax , focal consolidation , definite pleural effusion , or pulmonary edema . The cardiomediastinal silhouette is within normal limits .
    OUTPUT:
    
Stable changes related to left upper lobectomy without acute cardiopulmonary process .