Definition
Components
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Data Element ConceptPerson with cancer—number of regional lymph nodes examined
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Object ClassPerson with cancer
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PropertyNumber of regional lymph nodes examined
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Value DomainTotal lymph nodes code N[NN]
Representation
This representation is based on the value domain for this data element, more information is available at " Total lymph nodes code N[NN] ".Data Type | Number |
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Format | N[NN] |
Maximum character length | 3 |
Value | Meaning | Start Date | End Date | |
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Supplementary Values | 997 | Number of lymph nodes unknown |
Comments
Guide for use:
A list of which lymph nodes are defined as regional lymph nodes for each cancer site may be found in the TNM Classification of Tumours, 6th Edition, UICC.
The number includes all nodes examined regardless of whether removed/examined at a single or multiple procedures e.g. for breast cancer, record the sum of regional lymph nodes examined from node sampling/sentinel node biopsy and axillary clearance.
The number of regional lymph nodes is cumulative from all procedures that removed lymph nodes through the completion of surgeries for the treatment of the cancer.
Breast cancer:
Regional lymph nodes include all ipsilateral axillary, ipsilateral infraclavicular/subclavicular, ipsilateral internal mammary and ipsilateral supraclavicaular nodes. All other nodes (including contralateral internal mammary nodes) are considered to be distant metastases and should not be recorded in this data item. Defintions from UICC TNM Classification of Malignant Tumours 6th Edition.
Origin:
Australian Cancer Network
Commission on Cancer American College of Surgeons
References
Australian Cancer Network The pathology reporting of breast cancer. A guide for pathologists, surgeons and radiologists Second Edition Sydney (2001)
Commission on Cancer, Standards of the Commission on Cancer Registry Operations and Data Standards (ROADS) Volume II (1998)
Johnson CH, Adamo M (eds.), SEER Program Coding and Staging Manual 2007. National Cancer Institute, NIH Publication number 07-5581, Bethesda, MD 2007.
This content Based on Australian Institute of Health and Welfare material. Attribution provided as required under the AIHW CC-BY licence.