In halo sign seen in csf rhinorrhea:
Blood is encircled with csf.
CSF is encircled with blood.
Both are mixed no demarcation.
None of the above.
CSF rhinorrhea seen in
Lefort 2&3
Naso orbital ethmoid fracture.
Cribiform plate fracture.
Frontal sinus fracture.
Sphenoidal sinus fracture