Thyroid Cancer pT4 TNM Finding v6

**Semantic type:** Finding

**Definition:** Thyroid cancer with any size tumor extending beyond the thyroid gland capsule to invade subcutaneous soft tissues, larynx, trachea, esophagus, recurrent laryngeal nerve, prevertebral fascia, or encasing the carotid artery or mediastinal vessels. All anaplastic carcinomas are also classified as pT4, with separate subclassification. (from AJCC 6th Ed.)

**Synonyms:** - pT4 Cancer of the Thyroid v6 - pT4 Carcinoma of the Thyroid TNM Finding v6 - pT4 Thyroid Cancer TNM Finding v6 - pT4 Thyroid Carcinoma TNM Finding v6