Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Bilateral widespread parenchymal opacities are again seen , slightly increased since ___ , better visualized on dedicated chest CT . Performed earlier today . The heart size is top normal . The hilar and mediastinal contours remain within normal limits . There is no pneumothorax or pleural effusion
    OUTPUT:
    
Widespread pulmonary parenchymal opacities have slightly increased since the ___ radiograph . The differential remains pulmonary edema , alveolar hemorrhage , ARDS , atypical infection , or pulmonary alveolar proteinosis .