Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright chest radiograph was obtained . The lungs are well expanded with small right pleural effusion and atelectasis . There is vascular congestion without definite edema . No left effusion or pneumothorax is seen . Mild to moderate cardiomegaly , particularly with enlargement of left atrial contour , is noted .
    OUTPUT:
    
Right pleural effusion and atelectasis with mild vascular congestion but not definite edema .