Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a diffuse bilateral interstitial abnormality , which is nonspecific . There is no significant fullness of the bilateral hila , suggesting it is unlikely to be related to pulmonary edema . There is no focal airspace consolidation . There may be a small amount of fissural fluid seen on the lateral view . No large pleural effusion is seen . Mediastinal contours are normal . The heart size is mildly enlarged .
    OUTPUT:
    
1 . Diffuse interstitial abnormality , which in the setting of fevers , could represent an atypical infection , such as a virus or PCP . 2 . Mild cardiomegaly . Possible small amount of fissural fluid seen on the lateral view .