Salivary Gland Cancer pT4a TNM Finding v9

**Semantic type:** Finding

**Definition:** Tumor invades any immediately adjacent structures including: skin, bone, cartilage, solid organ parenchyma, esophagus, trachea, named nerve. The following scenarios are not considered T category defining "bone invasion": 1) Destruction of intrinsic sinus bone in sinonasal primaries; 2) Erosion of cortical bone; 3) Primary intraosseous (central) salivary gland tumors. (from AJCC 9th Ed.)

**Synonyms:** - Salivary Gland Carcinoma pT4a TNM Finding v9