Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There diffuse bilateral tiny pulmonary nodal bilaterally , with somewhat upper lobe predominance . There is no confluent consolidation or effusion . The cardiomediastinal silhouette is within normal limits . No obvious hilar adenopathy . No acute osseous abnormalities .
    OUTPUT:
    
Diffuse small bilateral pulmonary nodules . Differential considerations include metastatic disease or infection , potentially fungal , viral , or mycobacterial .