Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette is normal in size . The hilar and mediastinal contours are within normal limits . Lungs are well expanded and clear . There is no focal consolidation , pleural effusion or pneumothorax . There is a 4 mm rounded density in the a right upper lobe .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . 4 mm rounded density in the right upper lobe could reflect a pulmonary nodule . In the absence of priors further examination with a non urgent chest CT is advised .