Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal silhouette and pulmonary vasculature are unremarkable . Minimal linear opacity at the left lung base is likely atelectasis . No definite focal consolidation is identified . A tiny nodule projecting over the right medial lung base likely represents a vessel en face . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No acute intrathoracic process .