04-25-2025

Revised Instructions for Sentinel Lymph Nodes Positive for 2025

Scenario: Breast Cancer Dx Snips from path report

Final Dx

Sentinel node 1. Right axilla: No neoplasm present in 1 identifiable lymph node
Sentinel node 2. Right axilla: Metastatic mammary carcinoma present in 1 identifiable lymph node.
Axillary dissection: Metastatic mammary carcinoma present in 3 of 10 identifiable lymph nodes identifiable lymph nodes

Synoptic

REGIONAL LYMPH NODE STATUS:
Number of lymph nodes with macrometastasis: 4
Number of lymph nodes with micrometastasis: 0
Number of lymph nodes with isolated tumor cells: 0
Number of lymph nodes examined (sentinel and non-sentinel): 12
Number of sentinel nodes examined: 2

Dx Year	Sentinel Lymph Nodes Positive	Sentinel Lymph Nodes Examined	Regional Lymph Nodes Positive	Regional Lymph Nodes Examined	Rationale
2018-2024	97	02	04	12	*STORE Instructions for Sentinel Lymph Nodes Positive* For breast cases only: If a sentinel lymph node biopsy is done at the same time as a regional lymph node dissection, enter code 97 in this field. In the Regional Lymph Nodes Positive [820] field, report the total number of positive lymph nodes found from both the sentinel and regional nodes.
2025	01	02	04	12	*STORE Summary of Changes -field revised 2025* *STORE Instructions for Sentinel Lymph Nodes Positive* For breast cases only: If a sentinel lymph node biopsy is done during the same procedure as a regional node dissection and the pathology report lists the number of positive sentinel nodes, enter that number in this field. Then, in Regional Lymph Nodes Positive [820], record the combined total of all positive lymph nodes—both sentinel and regional.