Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Supine portable AP view the chest provided . Lung volumes are low limiting assessment . In this patient with a known right diaphragmatic eventration , a double density at the right lower lung is reflective of this . There is bibasilar atelectasis without large pleural effusion . Heart size is difficult to assess . Mediastinal contour appears grossly unremarkable . No convincing signs of overt edema or pneumonia when interpreted in conjunction with same - day CT abdomen pelvis .
    OUTPUT:
    
Bibasilar atelectasis . Right hemidiaphragmatic eventration . No overt signs of edema or pneumonia .