Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lung volumes are low . Minimal pleural - parenchymal scarring is noted at the lung apices . Streaky atelectasis at the left lung base is noted . There is otherwise no focal consolidation . Pleural effusion or pneumothorax . Cardiomediastinal silhouette is normal . Incidental note is made of fusion of several left - sided ribs , better demonstrated on prior chest CT .
    OUTPUT:
    
No definite evidence of parenchymal masses . Note that CT is more sensitive for detection of subtle parenchymal metastases .