NAACCR Item #3834: Extravascular Matrix Patterns
| Item # | Length | Source of Standard | Year Implemented | Version Implemented | Year Retired | Version Retired |
|---|---|---|---|---|---|---|
| 3,834 | 1 | NAACCR | 2018 | 18 |
NAACCR XML: Tumor.extravascularMatrixPatterns
Description
Extravascular Matrix Patterns, the presence of loops and networks in extracellular matrix patterns, is a prognostic factor for uveal melanoma.
Rationale
Extravascular Matrix Pattern is a Registry Data Collection Variable in AJCC 8. This data item was previously collected as Uveal Melanoma, CS SSF #11 and CS SSF# 12. These two data items were combined and simplified into one data for cases diagnosed 1/1/2018+.
Codes
| 0 | Extravascular matrix pattern not present/not identified |
| 1 | Extravascular matrix pattern present/identified |
| 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 Extravascular Matrix Pattern 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.