An antrolith is a calcified mass within the maxillary sinus. The origin of the nidus of calcification may be extrinsic (foreign body in sinus) or intrinsic (stagnant mucus, fungal ball).
Most antroliths are small and asympotomatic. Larger ones may present as sinusitis with symptoms like pain and discharge.
They appearas solitary or multiple, faintly to extremely radio-opaque masses embedded within the mucoperiosteum. The sinus wall is intact.
Small antroliths require no treatment. However, larger or symptomatic masses need to be are surgically removed.
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