Thyroid

Question 1

T1

Answer 1

tumor </ 2 cm in greatest dimension limited to the thyroid

Question 2

T2

Answer 2

tumor >2 cm but </4cm in greatest dimension limited to thyroid

Question 3

T3

Answer 3

tumor >4cm to the thyroid or gross extra thyroidal extension invading only strap muscle
T3a: >4cm
T3b: ETE invading only strap muscle

Question 4

T4

Answer 4

T4a: gross ETE invading subcutaneous soft tissue, larynx, trachea, esophagus, or recurrent laryngeal nerve from a tumor of any size
T4b: gross extrathyroidal extension invading prevertebral fascia or encasing carotid artery or mediastinal vessels from a tumor of any size

Question 5

N1a

Answer 5

metastasis to level VI or VII (pre tracheal, paratracheal, or prelaryngeal, Delphian or upper mediastinal) lymph nodes. this can be unilateral or bilateral

Question 6

N1b

Answer 6

metastasis to unilateral bilateral or contralateral neck lymph nodes (level I, II, III, IV or V) or retropharyngeal lymph nodes

Question 7

Stage III

Answer 7

T4a any N M0

Question 8

stage IVB age >/55 yrs

Answer 8

any T any N M1

Question 9

stage IVA age >/55yrs

Answer 9

T4b, any N, M0