Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single portable AP view of the chest was obtained . A chest tube is again noted on the right in a slightly different configuration but still directed towards the right apex . Moderate right pneumothorax persists . Right mid / lower lung opacification from contusions have slightly improved . The left lung is well expanded and clear . Heart is normal in size and cardiomediastinal contour is unchanged . Multiple right rib fractures noted and concerning for flail chest .
    OUTPUT:
    
1 . Persistent moderate right pneumothorax . 2 . Slightly improved appearnace of right mid / lower lung contusion and / or aspiration .