Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: An AICD generator overlies the left chest wall and is only partially imaged . A single lead appears intact and is in unchanged expected position . There is new mild pulmonary edema . Overall aeration of the left lung base is decreased compared to recent prior ; the opacity may be due to asymmetric edema or interval development of aspiration / pneumonia . The left base can be reassessed after diuresis . The right lung appears clear . There is no pneumothorax . Moderate cardiomegaly is unchanged compared to prior examination .
    OUTPUT:
    
New mild pulmonary edema . New left lower lobe opacity may be asymmetric edema , though underlying aspiration / pneumonia is possible . Re-evaluation after diuresis is recommended .