Collaborative Stage

Note 1: For AJCC 7th Edition, the T category is not only dependent on tumor size but also several high risk features that can upgrade the T stage.
Note 2: Based on the information in the medical record, the registrar is required to count and code the number of high risk features (each feature equals 1 risk factor). If any risk feature is unknown it can be disregarded, only record the presence of any of the following risk features:
    Poorly differentiated/Undifferentiated (grade 3 or 4)
    Depth >= 4 mm depth
    Clark's level IV or V
    Perineural invasion
    Lymphovascular invasion

Code	Description
000	No high risk features
001	1 high risk feature
002	2 high risk features
003	3 high risk features
004	4 high risk features
005	5 high risk features
988	Not applicable: not collected for this case
998	No histologic examination of primary site
999	Unknown if any high risk features present Cannot be assessed Not documented in patient record

CS Site-Specific Factor 12
High Risk Features