Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Since ___ , mild interval improvement in widespread bilateral opacities are seen , possibly due to improvement of pulmonary edema following diuresis . The underlying lung fibrosis is unchanged . Small left apical pneumothorax appears mildly increased . The feeding tube is seen in the stomach . The left PICC line is in the lower SVC . The heart size is unchanged .
    OUTPUT:
    
1 . Mild improvement in widespread bilateral opacities , possibly from improvement of pulmonary edema following diuresis . 2 . Small left apical pneumothorax appears mildly increased since ___ .