Right maxillary sinus ectopic tooth
Right facial swelling.
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The right maxillary sinus is nearly totally opacified and appears expanded. Its walls are thinned secondary to this expansion with erosion of the lower anterior wall. Also, a hyperdense tooth-like structure is seen obstructing the right maxillary infundibulum.
This is a case of an ectopic right molar tooth obstructing the right infundibulum with a subsequent right maxillary mucocele.