Mucocele involving the paranasal sinuses are commomly occurring lesions. The literature shows that the frontal, ethmoid, and sphenoid sinuses are most frequently involved, in that order, whereas involvement of the maxillary sinus is relatively rare?.
Mucopyocele, mucocele in which the mucous secretion has become purulent, are less common in the maxillary sinus.
The following case report is of interest because of the relative rarity of this destructive inflammatory process in the maxillary sinus and because, as in this patient, the lesion can sometimes be confused with a malignant neoplasm.
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