Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is bilateral diffuse reticular interstitial thickening , without prior imaging for comparison . The right hila appears prominent . Heart size is normal . The mediastinal contour is normal . No pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
1 . Bilateral diffuse interstitial thickening , which could represent viral , atypical bacterial , or less likely fungal pneumonia . This could also represent interstitial pulmonary edema , although there are no other findings to suggest congestive heart failure . 2 . Prominence of right hilum , which suggests pulmonary hypertension .