"When a supraorbital cell is present, care should be taken on pre-functional endoscopic sinus surgery imaging studies to identify the anterior ethmoidal notch as the anterior ethmoidal artery is usually seen freely travelling within the ethmoid air cells and thus at greater risk of intraoperative injury. Moreover, these cells may contribute to obstructing the frontal recess and may be mistaken preoperatively for the frontal recess."
Expected headings
"Gross anatomy"