Which endoscopic sinus procedure clears the ethmoidal compartments of disease?
a. Functional endoscopic sinus procedure (FESS)
b. Wigand procedure
c. Sphenoidotomy
d. Rhinoplasty
ANS: A
The functional endoscopic sinus procedure (FESS) or the Messerklinger technique begins at the ethmoid and works anteriorly to the frontal and maxillary sinuses to clear the ethmoidal compartments of disease.
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