Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Severe bilateral widespread opacities have not changed significantly since the previous exam . Superimposed pulmonary edema has improved . Pleural effusion is small if any . There is no pneumothorax . Left - sided PICC line ends in upper SVC .
    OUTPUT:
    
1 . Patient is known with bilateral necrotizing pneumonia that has not significantly changed since previous exam . 2 . Superimposed pulmonary edema has improved .