Maxillary sinus

The maxillary sinus (Sinus maxillaris) is carved within the maxilla but can extend to the palatine bone, the lacrymal bone, the zygomatic bone and may extend to include diverticula of the ventral nasal concha or of the sphenoidal sinus.

It is located rostrolaterally to the orbit and presents a remarkable relation with the infraorbital canal, that follows it or passes through it back to front, as well as with the alveoli of the molar teeth.