Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Assessment slightly limited by patient positioning and rotation . Patient is status post median sternotomy and aortic valve replacement . Right - sided lumen central venous catheter tip terminates in the proximal right atrium . Lung volumes are low . Mild cardiomegaly with left ventricular configuration is again seen , not substantially changed in the interval . Tortuosity of the thoracic aorta is present . There is mild pulmonary edema , worse in the interval , with small bilateral pleural effusions . Patchy atelectasis is noted in the lung bases without focal consolidation . No pneumothorax is present . The osseous structures are diffusely demineralized .
    OUTPUT:
    
Mild pulmonary edema and small bilateral pleural effusions with bibasilar atelectasis .