Version 25
Data Item #3817: Breslow Tumor Thickness

Length: 4
Source of Standard: NAACCR
Section Name: Stage/Prognostic Factors
Year Implemented: 2018
Version Implemented: 18
Record Types: A, M, C, I

XML NAACCR ID: breslowTumorThickness

Parent XML Element: Tumor

Required Status:

NPCR Collect: RS - Required, site specific
CoC Collect: RS - Required, site specific
SEER Collect: RS - Required, site specific
CCCR Collect: RS* - Required, site specific; when available

Description:

Breslow Tumor Thickness, the measurement of the thickness of a melanoma as defined by Dr. Alexander Breslow, is a prognostic factor for Melanoma of the Skin.

Rationale:

Breslow Tumor Thickness is a Registry Data Collection Variable in AJCC. It was previously collected as Melanoma Skin, CS SSF# 1.

Item Data Type:

text

Allowable Values

0.0, 0.1-99.9, XX.1, A.01-A9.9, AX.0, XX.8, XX.9

Codes:

0.0	No mass/tumor found
0.1	Greater than 0.0 and less than or equal to 0.1
0.2-99.9	0.2 - 99.9 millimeters
XX.1	100 millimeters or larger
A0.1-A9.9	Stated as "at least" some measured value of 0.1 to 9.9
AX.0	Stated as greater than 9.9 mm
XX.8	Not applicable: Information not collected for this schema (If this item is required by your standard setter, use of code XX.8 will result in an edit error)
XX.9	Not documented in medical record Microinvasion; microscopic focus or foci only and no depth given Cannot be determined by pathologist In situ melanoma Breslow Tumor Thickness not assessed or unknown if assessed

Code Notes:

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.

Version 25 Data Item #3817: Breslow Tumor Thickness