Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are slightly low , likely secondary to lack of full inspiratory effort . No focal consolidation to suggest pneumonia , pulmonary edema , pleural effusion , or pneumothorax . The heart is normal in size . The mediastinum is not widened . Hila and pleura are within normal limits .
    OUTPUT:
    
No acute intrathoracic process . No pneumonia .