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(If you are unfamiliar with staging of tumors, please click HERE for a comprehensive discussion from the American Cancer Society-ACS)

 

Summary Staging [NCI SEER data analysis 2000-2005] [ACS Breast Cancer Facts & Figures]

• 61% or breast cancer cases are diagnosed while the cancer is still confined to the primary site- localized. (Stage I and II)

• 31% are diagnosed after the cancer has spread to regional lymph nodes or directly beyond the primary site - regional. (Stage III)

• 6% are diagnosed after the cancer has already metastasized - metastatic (Stage IV)

• Staging information is unknown for 2% remaining

 

NOTE: This would not include metastatic recurrences. For a complete discussion, click HERE.