Right maxillary sinus squamous cell carcinoma. There is an enhancing mass centered in the right maxillary sinus with extension into the premalar space via a 15 mm wide dehiscence of the anterior maxillary sinus wall. The tumor also erodes into the right maxillary gingiva and protrudes into the right inferior meatus. Overall, the mass measures up to approximately 4.5 cm. There is also apparent perineural extension into the right pterygopalatine fossa via a thickened right infraorbital nerve. The orbital contents are otherwise unremarkable and the right cavernous sinus is not particularly enlarged. There is nasal packing material in the right middle meatus and obstructed secretions throughout the right osteomeatal unit. There is right level 1 and 2 lymphadenopathy and an enlarged right lateral retropharyngeal lymph node, which measures 10 x 12 mm. The imaged portions of the brain parenchyma are unremarkable.
1. A mass measuring up to approximately 4.5 cm centered in the right maxillary sinus with extension beyond the sinus is compatible with squamous cell carcinoma, including apparent perineural extension into the right pterygopalatine fossa via the infraorbital nerve. 2. Metastatic right cervical lymphadenopathy is partly imaged. Please refer to the separate PET and neck CT reports for additional details.