Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a new area of irregular , branching opacification in the right lower lobe , which may represent atelectasis or aspiration . The enteric tube and endotracheal tube are unchanged compared to the prior radiograph . Low lung volumes along with the patient supine positioning likely account for apparent pulmonary vascular crowding . No pleural abnormalities detected . The heart and mediastinum are normal appearing .
    OUTPUT:
    
1 . New irregular opacification in the right lower lobe which may represent atelectasis , but for which follow up radiographs are recommended to evaluate for resolution or evolution .