AJCC TNM content
TNM content of the AJCC has been added to SNOMED in one of the last releases. In the Netherlands we miss some categories that are not used in the USA. If more countries needs this part as well we can ask them to add them to the international release. Else we are in contact with AJCC to be able to add them to our extension.
It concerns codes for all possible ycT, ycN, rT, rN and rM categories
Are there more countries that also use this part of the TNM categories and needs them in SNOMED?
Comments
Hi Elze de Groot (Unlicensed) ,Libby Antoun (Unlicensed) and other interested CMAG members,
In relation to this discussion would you be able to confirm you are referring to AJCC, not the UICC classification https://www.uicc.org/resources/tnm which is used in Europe.
Would you be able to provide use cases for these terms?
Thanks,
Cathy
hi Cathy Richardson I already had contact with AJCC. They said these were out of scope because they thought they were not used (I think in USA ). These categories are also used for tumor classification in the Netherlands like the other categories that are already added.
See this source for yc: https://www.facs.org/media/j30havyf/ajcc_7thed_cancer_staging_manual.pdf
"The extent of disease is classifi ed using the same T, N, and M definitions and identifi ed as posttreatment with a “yc” or “yp” prefix (ycT, ycN, ycTNM; ypT, ypN, ypTNM).
Note that American registry systems do not have a data element to record “yc” elements, but these may be recorded in the medical record. The measured response to therapy and/or the extent of cancer after therapy may be prognostic. It is also used to guide subsequent surgery or other therapy. "
It seems like rM and rN and rT are AJCC/UICC stages. https://www.sciencedirect.com/science/article/abs/pii/S0959804915004451
I already did a request to AJCC to add this part to our National Extension, but that is not necessary if more countries use these codes and it can be added to the International edition.
The New Zealand Cancer Control Agency and Health New Zealand Te Whatu Ora would be very interested in this part of the AJCC being added to SNOMED international release. Thank you for raising this with us.