Papillary, Follicular, Hurthle Cell, Poorly Differentiated, and Anaplastic Thyroid Carcinoma pT4a TNM Finding v8

**Semantic type:** Finding

**Definition:** Gross extrathyroidal extension invading subcutaneous soft tissues, larynx, trachea, esophagus, or recurrent laryngeal nerve from a tumor of any size. (from AJCC 8th Ed.)

**Synonyms:** - Differentiated and Anaplastic Thyroid Carcinoma pT4a TNM Finding v8 - pT4a