Breast Cancer / Carcinoma of the Breast
- Breast Anatomy
- Causes / Etiology of Breast Cancer
- Signs and Symptoms of Breast Cancer
- High-Risk Group
- Diagnosis of Breast Cancer
- Staging / Classification
- Treatment of Breast Cancer
- Prognosis of Breast Cancer
- Support Groups
- Latest Publication and Research
Staging / Classification
STAGE 0: In Situ ("in place") disease in which the cancerous cells are in their original location within normal breast tissue.
STAGE I: Tumor that is less than 2 cm in diameter with no spread beyond the breast.
STAGE II: Tumor that is 2 to 5 cm in size without spread to lymph nodes of axilla or tumor less than 2 cm in size with spread to axillary lymph nodes.
STAGE III: Tumor that is smaller than 5 cm in size with spread to axillary lymph nodes which are attached to each other or to other structures.
STAGE IV: A tumor that is of any size, which spread beyond the region of the breast and chest wall, such as to liver, bone, or lungs.
Each tumor is classified histologically into the following:-
• well-differentiated tumors (low grade) - resembles normal tissue.
• poorly differentiated tumors (high grade) - composed of disorganized cells, does not resemble normal tissue.
• Moderately differentiated tumors (intermediate grade) – has charecteristics that resemble both of the above.