Case Reports in Otolaryngology / 2013 / Article / Fig 2

Case Report

Excessive Paranasal Sinuses and Mastoid Aeration as a Possible Cause of Chronic Headache

Figure 2

(a) Linear measurements of frontal sinus in the axial plane (RL: anteroposterior length of the right sinus and LL: anteroposterior length of the left sinus). (b) Area calculation of the sphenoid sinuses and the mastoid air cells in the axial plane.

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