NAACCR Item #2800: CS Tumor Size

Item # Length Source of Standard Year Implemented Version Implemented Year Retired Version Retired
2800 3 AJCC 2003 10

NAACCR XML: Tumor.csTumorSize

Records the largest dimension or diameter of the primary tumor in millimeters.
Tumor size at diagnosis is an independent prognostic indicator for many tumors and it is used by Collaborative Staging to derive some TNM-T codes.
Codes (See the most current version of the Collaborative Stage Data Collection System (,13 for rules and site-specific codes and coding structures.)