NAACCR Item #3858: High Risk Histologic Features
|Item #||Length||Source of Standard||Year Implemented||Version Implemented||Year Retired||Version Retired|
NAACCR XML: Tumor.highRiskHistologicFeatures
High Risk Histologic Features are defined in AJCC 8 Chapter 15 to include the terms "poor differentiation, desmoplasia, sarcomatoid differentiation, undifferentiated." High risk histologic features are a prognostic factor for cutaneous cell carcinomas of the head and neck.
High Risk Histologic Features is a Registry Data Collection Variable in AJCC. It was previously collected as Skin, CS SSF # 12.
|0||No high risk histologic features|
|2||Poor differentiation (grade 3)|
|4||Undifferentiated (grade 4)|
|5||Multiple high risk histologic features|
|6||Histologic features, NOS (type of high risk histologic feature not specified)|
|8||Not applicable: Information not collected for this case (If this information is required by your standard setter, use of code 8 may result in an edit error)|
|9||Not documented in medical record High risk histologic features not assessed or unknown if assessed|
Each Site-Specific Data Item (SSDI) applies only to selected primary sites, histologies, and years of diagnosis. Depending on applicability and standard-setter requirements, SSDIs may be left blank.