Large mass centred on the left alveloar ridge occupying nearly the entirety of the left maxillary sinus.
Gross destruction of the roof, anterior and lateral walls and floor of the left maxillary sinus. The left inferior orbital wall is destroyed. The mass extends anteriorly into the premaxillary soft tissue, superiorly through the orbital floor to the lateral extraconal space and buccal space. No extension into the masticator space or intracranially.
The floor of the anterior cranial fossa is intact.
Sclerosis of the maxilla extending to the frontozygomatic syndesmosis.
The paranasal sinuses and nasal canal are normal.