Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . There are small bilateral pleural effusions with mild pulmonary edema . Lower lobe atelectasis likely present though can not exclude a component of pneumonia . No large pneumothorax . Overall cardiomediastinal silhouette is stable . Bony structures are intact with inferior spurring at the shoulders . Chronic left rib deformity is noted
    OUTPUT:
    
Mild edema , small bilateral effusions , lower lung atelectasis , difficult to exclude a superimposed pneumonia .