Salivary Gland Cancer pT4b TNM Finding v9

**Semantic type:** Finding

**Definition:** Tumor invades beyond any adjacent structures including encasement of carotid artery, base of skull invasion (except nasopharynx), spinal column invasion, intracranial invasion, orbital apex, prevertebral space, mediastinal structures, masticator space. (from AJCC 9th Ed.)

**Synonyms:** - Salivary Gland Carcinoma pT4b TNM Finding v9