NAACCR Item #3834: Extravascular Matrix Patterns

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Item # Length Source of Standard Year Implemented Version Implemented Year Retired Version Retired Column #
3834 1 NAACCR 2018 18 1876 - 1876

NAACCR XML: Tumor.extravascularMatrixPatterns

Extravascular Matrix Patterns, the presence of loops and networks in extracellular matrix patterns, is a prognostic factor for uveal melanoma.
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+.
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.