Question: A 36 year old male is involved in a motor vehicle accident and develops unilateral clear rhinorrhea. CT demonstrates a naso-orbito-ethmoid fracture with opacification of multiple ethmoid air cells. Beta-2 transferrin testing of the fluid is positive. What percentage of traumatic anterior skull base CSF leaks will close spontaneously? [Answer will be posted with next week's new question]

Answer to last week's question, "Take Two Aspirin And Call Me In The Morning" (April 17, 2017)

Surgery.