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

<table>(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.</table>

Case Reports in Otolaryngology

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Figure 2

Figure 2: Excessive Paranasal Sinuses and Mastoid Aeration as a Possible Cause of Chronic Headache 