Lip and Oral Cavity Cancer pT4b TNM Finding v8

**Semantic type:** Finding

**Definition:** Lip and oral cavity cancer with very advanced local disease. Tumor invades masticator space, pterygoid plates, or skull base and/or encases the internal carotid artery. (from AJCC 8th Ed.)

**Synonyms:** - Lip and Oral Cavity Carcinoma pT4b TNM Finding v8