label: Lip and Oral Cavity Cancer pT4 TNM Finding v6
label_lc: lip and oral cavity cancer pt4 tnm finding v6
description: "Lip cancer with tumor invading through cortical bone, inferior alveolar nerve, floor of mouth or skin of face (i.e. chin or nose). Superficial erosion of bone or tooth socket by a gingival primary tumor is not sufficient to classify as T4. (from AJCC 6th Ed.)"