Data Element

Information from the submission form

AJCC T Category
For both Clinical (cT), Pathological (pT) and Neoadjuvant (ycT or ypT), the T Category is defined as the size and/or contiguous extension of the primary tumor. Note: The roles of the size component and the extent of contiguous spread are specifically defined for each cancer site. Primary Tumor (T) Categories: Primary tumor categories have specific notations to describe the existence, size, or extent of the tumor. TX: No information about the T category for the primary tumor, or it is unknown or cannot be assessed T0: No evidence of a primary tumor Tis: Carcinoma in situ T1, T2, T3, or T4: Primary invasive tumor, for which a higher category generally means • an increasing size • an increasing local extension, or • both


Important update to AJCC USCDI ONDEC submission

The American Joint Committee on Cancer (AJCC) would like to provide an important update on the Cancer Staging (AJCC TNM), AJCC T Category, AJCC N Category, AJCC M Category, and AJCC Stage Group data elements originally submitted to USCDI ONDEC on October 23, 2020.   The AJCC requests that the USCDI reviewers reconsider the Classification Level of the AJCC data elements based on the recent development of a license agreement that will make the AJCC data elements accessible from the SNOMED CT terminology.  The AJCC feels that the availability of the AJCC data elements in a standard terminology that is freely available and in wide use significantly strengthens the original submission and demonstrates previous challenges have been addressed. The American College of Surgeons and SNOMED International entered into a license agreement to allow AJCC data elements to be included in the SNOMED CT terminology.  Provided below are links to the announcements from both organizations. The original and full comment from the AJCC is linked here: 

Log in or register to post comments