Fig. 2.

Contrast-enhanced MRI neck scan demonstrating an extensively infiltrating necrotic malignancy centered in the right maxillary sinus, with heterogeneously bright contrast enhancement. A) Axial MRI imaging demonstrates a large avidly enhancing tumor centered in the right maxillary sinus. This extends anteriorly and laterally through the maxillary walls to the skin surface involving the right nasolabial fold and the facial muscles. Posteriorly, this extends into the pterygopalatine fossa, post-nasal space, and right masticator space infiltrating the right medial and latent pterygoid muscles. B) Coronal NIRI imaging demonstrates a large enhancing tumor centered in the right maxillary sinus, with non-enhancing areas of necrosis. This extends medially into the nasal cavity involving right middle and inferior nasal turbinate, along with infiltration of the right hard palate inferiorly