Maxillary Sinus Cancer pT4b TNM Finding v7

**Semantic type:** Finding

**Definition:** Maxillary sinus cancer with very advanced local disease. Tumor invades any of the following: orbital apex, dura, brain, middle cranial fossa, cranial nerves other than maxillary division of trigeminal nerve, nasopharynx, or clivus. (from AJCC 7th Ed.)