Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No focal consolidation , pleural effusion , or evidence of pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable . 3 mm rounded nodular opacity in the right mid lung medially most likely represents a vessel on end or possibly a granuloma .
    OUTPUT:
    
No acute cardiopulmonary process .