Stage I Differentiated Thyroid Gland Carcinoma 45 Years and Older AJCC v7

**Semantic type:** Neoplastic Process

**Definition:** Stage I includes: T1, N0, M0. T1: Tumor size 2 cm or less in greatest dimension, limited to the thyroid gland. N0: No regional lymph node metastasis. M0: No evidence of distant metastasis. (from AJCC 7th Ed.)

**Synonyms:** - Stage I Differentiated Thyroid Gland Cancer 45 Years and Older - Stage I Differentiated Thyroid Gland Carcinoma 45 Years and Older - Stage I Thyroid Gland Papillary or Follicular Carcinoma 45 Years and Older