maxillary antrum


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maxillary antrum

[′mak·sə‚ler·ē ′an·trəm]
(anatomy)
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This revealed recurrence in the posterior wall of the maxillary antrum, which was debrided to a shell of bone.
Repeat CT of the sinuses showed moderate residual soft-tissue density within the left maxillary antrum.
Computed tomography of the sinuses showed (1) an abnormal soft-tissue process causing expansion of the right maxillary sinus with complete opacification of the right maxillary antrum, (2) widening of the right ostiomeatal complex with mucosal thickening in the right-sided ethmoidal sinus cells, and (3) no violation of the bony wails separating the sinuses from the orbit or intracranial cavity (figure 1, A and B).
The complications and presenting symptoms of cholesteatoma, which may occur as a result of the interplay between bone erosion and infection, are determined by the anatomic relationship of the maxillary antrum (including the orbit, nasal cavity, teeth, and mouth) and the pterygomaxillary space.
The tumor was found to be arising from the right maxillary antrum, and it extended medially to involve the middle meatus, the anterior ethmoid air cells, and the inferior turbinate.
After elevation of orbital periosteum, a malleable retractor was introduced into the orbit, retracting the nasal process of maxilla, the nasal bone, and the medial wall of the maxillary antrum.
In the right maxillary antrum and ethmoid bullae, thick brown mucin and polyposis were identified.