Criteria for TNM Clinical Staging:
Physical examination; palpation of breast, axillary, supraclavicular and cervical nodes; pathologic examination of breast or other tissue to establish a diagnosis of cancer, including size of tumor, chest wall invasion, and presence or absence of positive nodes and distant metastases.
Criteria for TNM Pathologic Staging:
Removal of all primary tumor (no tumor at any margin of resection on gross examination) and at least Level I nodes (lateral to lateral border of pectoralis minor—at least 6 nodes in this area).
|T1a||> 0.1 to 0.5 cm|
|T1b||> 0.5 to 1 cm|
|T1c||>1 to 2 cm|
|T2||>2 to 5 cm|
|T3||> 5 cm|
|T4b||Skin edema/ulceration, satellite skin nodules|
|T4c||Both 4a and 4b|
|N1||Movable axillary pN1|
|pN1a||Micrometastases only, # 0.2 cm|
i 1-3 nodes, >0.2 to < 2 cm
ii 4 nodes/>0.2 to < 2 cm
iii through capsule/ < 2 cm
iv 2 cm
Collaborative Stage Elements
For more details on Collaborative Stage, see the Intro to Collaborative Staging module.