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Calculate the Risk
Calculate the Risk
Of breast cancer's spread to the sentinel lymph nodes or additional non-sentinel lymph nodes

Our breast cancer nomograms can be used to calculate: (1) the likelihood that breast cancer has spread to the sentinel lymph nodes (Sentinel Lymph Nodes Metastasis Nomogram); (2) the likelihood that breast cancer that has spread to the sentinel lymph nodes, under the arm, has also spread to additional non-sentinel lymph nodes under the arm (Additional Nodal Metastasis Nomogram). Each nomogram is designed to individualize the risk estimate for each patient.

Who Are These Tools For?

  • Sentinel Lymph Nodes Metastasis Nomogram

    This tool is for newly diagnosed breast cancer patients who want to know the likelihood that their breast cancer has spread to the sentinel lymph nodes. Patients should not have undergone neoadjuvant therapy. This nomogram is not a substitute for a sentinel lymph node biopsy.

Supporting Publications
Supporting Publications
Visit PubMed to view the journal articles that support these nomograms

  • Additional Nodal Metastasis Nomogram

    This tool applies to patients with primary invasive breast cancer that has already spread to the sentinel lymph nodes. The patient should not have had systemic therapy (chemotherapy drugs or hormones), including neoadjuvant therapy, and must not have received radiation therapy to the side of the body for which this tool is being used. Surgery cannot have been performed on the axilla for which the calculation is being performed. The lymph nodes of this axilla should not be enlarged.

Our recommendation is that these tools be used by physicians. Patients should use these tools only in consultation with their physicians.

What Information Will You Need?

Information Needed Parameters/Further Explanation Needed For
Pathologic size of the tumor (breast tumor size) Defined in centimeters -- between 0.001 and 9 cm for Additional Nodal Metastasis nomogram; between 0.1 and 11.0 for Sentinel Lymph Nodes Metastasis nomogram Both nomograms
Tumor type: Ductal or lobular If ductal, the nuclear grade must be specified -- I, II, or III Both nomograms
Lymphovascular invasion Whether the presence of one or more tumor cells was found in the lymphatic or vascular structure Both nomograms
Multifocal Whether cells have separated from the main tumor mass Both nomograms
Estrogen-receptor status Positive or negative. (We define ER positive as at least 10 percent of the cells being positive.) Within the Sentinel Lymph Nodes Metastasis Nomogram, an "unknown" status can be indicated Both nomograms
Was a frozen section performed? Need not have been the method that detected cancer in sentinel lymph nodes Additional Nodal Metastasis
Detected method for in the sentinel lymph nodes?

-Frozen section
-Routine histopathology
-H&E stains of serial sections
-IHC (immunohistochemistry)

Additional Nodal Metastasis
Number of positive sentinel lymph nodes Value must be between 1 and 7 Additional Nodal Metastasis
Number of negative sentinel lymph nodes Value must be between 0 and 14 Additional Nodal Metastasis
Age of patient Age in years between 20 and 91 Sentinel Lymph Nodes Metastasis
Tumor location Either upper inner quadrant (UIQ) or other location within the breast -- the nomogram compares UIQ vs. other quadrants Sentinel Lymph Nodes Metastasis
Special type Special types include pure tubular, pure colloid (mucinous), or typical medullary carcinomas. Other histologies, such as atypical medullary carcinoma or carcinoma with ductal and lobular features, must be classified as ductal Sentinel Lymph Nodes Metastasis
Progesterone-receptor status Positive, negative, or unknown Sentinel Lymph Nodes Metastasis

Note: The information required should be available to the patient's surgeon. For newly diagnosed patients who have not had surgery or excisional biopsies it has been demonstrated that evaluation of tumor size and multifocality based on core biopsies, mammography, ultrasound, or magnetic resonance imaging provide a good estimate.

How to Access the Prediction Tools

To use the online versions of these prediction tools, click on the Calculate box above.

The Additional Nodal Metastasis Nomogram is also available as Pocket PC, Palm (including Treo 600), or Macromedia Flash software. To download this software submit your e-mail address.


Last Updated: Jan. 30, 2008
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