Legend Axial, post contrast CT images through the paranasal sinuses and orbits. There is an enhancing lesion with its epicenter in the right maxillary sinus, with associated destruction of the anterior and medial walls of the maxilla to involve the right nasal cavity and the intra and extraconal compartments of the right orbit, including the right nasolacrimal duct. There is associated mass effect on the posterior aspect of the globe with right exophthalmos.

Legend Post contrast, coronal CT image confirms the findings of page 1. Axial images at the level of the floor of the mouth and oral cavity reveal heterogeneous enhancement of 2 large masses posterior to the right submandibular and parotid glands.

Legend Axial T2 and T1WI demonstrate the solid nature of the majority of the right maxillary sinus lesion with small lateral and posterior components of fluid-like signal.

Legend Post gadolinium axial and coronal images confirm heterogeneous enhancement of the mass involving the right maxillary sinus and adjacent nasal cavity, anterior ethmoid, and orbit, with a more lateral fluid component with peripheral enhancement. Key words: ct mri tumor neoplasia sinus

ENT Diagnosis: Undifferentiated nasal carcinoma