NAACCR Item #3858: High Risk Histologic Features
| Item # | Length | Source of Standard | Year Implemented | Version Implemented | Year Retired | Version Retired |
|---|---|---|---|---|---|---|
| 3,858 | 1 | NAACCR |
NAACCR XML: Tumor.highRiskHistologicFeatures
Description
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.
Rationale
High Risk Histologic Features is a Registry Data Collection Variable in AJCC. It was previously collected as Skin, CS SSF # 12.
Codes
| 0 | No high risk histologic features |
| 1 | Desmoplasia |
| 2 | Poor differentiation (grade 3) |
| 3 | Sarcomatoid differentiation |
| 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.