NAACCR Item #3891: Microvascular Density
Padding Character' '
|Item #||Length||Source of Standard||Year Implemented||Version Implemented||Year Retired||Version Retired||Column #|
|3891||2||NAACCR||2018||18||1885 - 1886|
NAACCR XML: Tumor.microvascularDensity
Microvascular Density (MVD), a quantitative measure of tumor vascularity, is a prognostic factor for uveal melanoma.
Microvascular Density (MVD), is a Registry Data Collection Variable in AJCC. This data item was previously collected as Uveal Melanoma, CS SSF# 13.
|00||No vessels involved|
|01-99||01-99 vessels per 0.3 square millimeter (mm2)|
|X1||Greater than or equal to 100 vessels per 0.3 square millimeter (mm2)|
|X2||Lowest quartile for laboratory|
|X3||Second quartile for laboratory|
|X4||Third quartile for laboratory|
|X5||Highest quartile for laboratory|
|X7||Test ordered, results not in chart|
|X8||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.)
|X9||Not documented in medical record
Microvascular Density (MVD) 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.