Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There are diffuse ___ B - lines and interstitial thickening bilaterally , which likely represents an atypical bacterial infection , mycoplasma , or viral infection . Heart size is normal . The mediastinal and hilar contours are normal . The pulmonary vasculature is normal . No pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
Diffuse interstitial thickening bilaterally , without other signs to suggest pulmonary edema , likely representing an atypical bacterial infection , mycoplasma , or viral infection .