NAACCR Item #3887: Measured Basal Diameter

Item # Length Source of Standard Year Implemented Version Implemented Year Retired Version Retired
3887 4 NAACCR 2018 18

NAACCR XML: Tumor.measuredBasalDiameter

Measured Basal Diameter, the largest basal diameter of a uveal melanoma, is a prognostic indicator for this tumor.
Measured Basal Diameter is listed as a Registry Data Collection Variable in AJCC. It was previously collected as Uveal Melanoma, CS SSF# 2.
0.0 No mass/tumor found
0.1-99.9 0.1–99.9 millimeters (mm)
(Exact measurement to nearest tenth of mm)
XX.0 100 millimeters (mm) or larger
XX.1 Described as "less than 3 mm"
XX.2 Described as “at least” 3 mm
XX.3 Described as “at least” 6 mm
XX.4 Described as “at least” 9 mm
XX.5 Described as “at least” 12 mm
XX.6 Described as “at least” 15 mm
XX.8 Not applicable: Information not collected for this case
(If this information is required by your standard setter, use of code XX.8 may result in an edit error.)
XX.9 Not documented in medical record
Cannot be determined by pathologist
Measured Basal Diameter 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.