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    Item #
    Length
    Source of Standard
    Year Implemented
    Version Implemented
    Year Retired
    Version Retired
  
  
    3891
    2
    NAACCR
    2018
    18
    
    
  



NAACCR XML: Tumor.microvascularDensity




Description
Microvascular Density (MVD), a quantitative measure of tumor vascularity, is a prognostic factor for uveal melanoma.
Rationale
Microvascular Density (MVD), is a Registry Data Collection Variable in AJCC. This data item was previously collected as Uveal Melanoma, CS SSF# 13.
Codes
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.

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