Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest demonstrate normal cardiomediastinal silhouette . The lungs are clear , with the exception of a ___- mm nodular density in the left first interspace , which is stable since at least ___ . There is no pneumothorax , vascular congestion or pleural effusion . Mild rib deformity in the right lower ribs may be projectional but could potentially represent prior injury .
    OUTPUT:
    
1 . No evidence of pneumonia . 2 . ___- mm nodular density in left first interspace , unchanged since at least ___ , which is reassuring .