Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Severe pulmonary edema is worsened since ___ . Bilateral pleural effusions , right greater than left , persist with associated bibasilar opacities , which could represent atelectasis , but concurrent pneumonia is not excludable by conventional chest radiography . A moderate hiatal hernia is unchanged from ___ . Stable moderate cardiomegaly is chronic .
    OUTPUT:
    
1 . Severe pulmonary edema worsened from ___ . 2 . Bilateral effusions with bibasilar opacities could represent atelectasis , but concurrent pneumonia is not excludable by conventional chest radiograph .