Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . There is no focal consolidation , pleural effusion or pneumothorax . Previous right upper lobe pneumonia has resolved . Small linear opacity at the left lung base is likely a combination of mediastinal fat and atelectasis . Heart size is normal . Mediastinal silhouette and hilar contours are normal . Pulmonary vasculature is normal . No acute osseous abnormality is identified .
    OUTPUT:
    
No acute intrathoracic process .