Breast Cancer Staging (AJCC 8th)

Question 1

Ductal carcinoma in situ T stage?

Answer 1

Tis

Question 2

Tumor size (TS) =< 1 mm T stage?

Answer 2

T1mi

Question 3

TS > 1 mm but < 5 mm

Answer 3

T1a

Question 4

TS > 5 mm but =< 10 mm

Answer 4

T1b

Question 5

TS > 10 mm but =< 20 mm

Answer 5

T1c

Question 6

TS > 20 mm but =< 50 mm

Answer 6

T2

Question 7

TS > 50 mm

Answer 7

T3

Question 8

Tumor extending to chest wall (invasion of pectoralis in the absence of chest wall invasion does not qualify)

Answer 8

T4a

Question 9

Ulceration and/or ipsilateral satellite nodules and/or edema w/o meeting criteria for T4b

Answer 9

T4b

Question 10

Both T4a and T4b present

Answer 10

T4c

Question 11

Inflammatory carcinoma

Answer 11

T4d

Question 12

micromets =< 2mm nodal stage?

Answer 12

N1mi

Question 13

mobile ipsilateral level 1-2 axillary LNs

Answer 13

N1a if 1-3 axilla LNs

N1b if ipsi IM LNs

N1c if N1a + N1b

Question 14

N2a?

Answer 14

matted/fixed ipsi lateral level I-II axillary LNs or 4-9 axillary LNs

Question 15

N2b?

Answer 15

ipsilateral IM (internal mammary) nodes or more than 10 axillary LNs