Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is within normal limits . The mediastinal and hilar contours appear normal . The lungs are clear of consolidation , but a lobulated nodular density is present at the right base measuring 1 .8 x 1 .6 cm in diameter without a clear correlate on the lateral view . There is no large pleural effusion or pneumothorax .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . Right base lung nodule ; CT may be considered non-emergently for further characterization .