T stages

Question 1

Thyroid cancer 10mm or less

Answer 1

T1a (microcarcinoma)

Question 2

Thyroid cancer 11 to 20mm

Answer 2

T1b

Question 3

Thyroid cancer 21 to 40mm

Answer 3

T2

Question 4

Thyroid cancer more than 40mm or minimal extrathyroid extension

Answer 4

T3

Question 5

Thyroid cancer into subcutis,larynx,trachea, oes, RLN

Answer 5

T4a

Question 6

Thyroid cancer into mediastinal vessel, around carotid, prevertebral fascia

Answer 6

T4b

Question 7

Anaplastic thyroid cancer - within thyroid

Answer 7

T4a

Question 8

Anaplastic thyroid cancer - extension beyond thyroid

Answer 8

T4b

Question 9

H and N (not endocrine) margins less than 1mm

Answer 9

Involved

Question 10

H and N (not endocrine)margins 5mm or more

Answer 10

Clear

Question 11

Grade of ca ex PA, salivary duct ca, oncocytic ca, mitotic Acinic cell ca, mucoepidermoid squamous pred

Answer 11

High grade

Question 12

Grade of Acinic cell ca, basal cell ca, cribriform AC, secretary ca, cystadeno ca, mucoepidermoid with goblet cell pred, epithelial-myoepithelial ca

Answer 12

Low grade

Question 13

Salivary ca 21 to 40mm

Answer 13

T2

Question 14

Salivary ca with macro extracasular extension

Answer 14

T3

Question 15

Salivary ca invading base of skull, around carotid, pterygoid plates

Answer 15

T4b

Question 16

Oral mucosa ca invading adjacent structures

Answer 16

T4

Question 17

Mucosal melanoma without deep invasion

Answer 17

T3

Question 18

Oral mucosa scc T3

Answer 18

Greater than 40mm