Collaborative Stage Data Set - Revised 10/23/2010 FINAL


CS Site-Specific Factor 5
Tumor Regression Grade

000Tumor Regression Grade 0
Complete response:  No viable cancer cells
No residual tumor
010Tumor Regression Grade 1
Moderate response:  Single cells or small groups of cancer cells
020Tumor Regression Grade 2
Minimal response:  Residual cancer outgrown by fibrosis
030Tumor Regression Grade 3
Poor response:  Minimal or no tumor kill; extensive residual cancer
See code 988

Not applicable for this site.
988Not applicable:  Information not collected for this case
(May include cases converted from code 888 used in CSv1 for "Not applicable" or when the item was not collected.  If this item is required to derive T, N, M, or any stage, use of code 988 may result in an error.)
990Response present, but degree of response not further described
998No preoperative treatment or no resection of primary site after preoperative treatment
999Unknown or no information
Not documented in patient record

List of Schemas   Colon Schema Index