maxillary sinus n.
An air cavity in the body of the maxilla, communicating with the middle meatus of the nose. Also called antrum of Highmore, maxillary antrum.
Chondroma usually begins either on the nasal surface of the bone or in the maxillary sinus.
The cheek is gradually invaded, and in some cases the growth extends into the maxillary sinus.
It is well to remove it before or during operation on the maxillary sinus.
In cases of chronic empyema of the maxillary sinus this operation is very successful.
Part of the healthy inferior turbinal may also require removal—as in the radical operation on the maxillary sinus.
Fibroma may originate in the periosteum or in the lining membrane of the maxillary sinus.
They are often rendered compound by opening into the mouth, into the maxillary sinus, or on to the skin of the cheek.