Collaborative Stage for TNM 7 - Revised 12/31/2009  [ Schema ]

Rectum

CS Site-Specific Factor 5
Tumor Regression Grade

CodeDescription
000Tumor Regression Grade 0
Complete Response - No viable cancer cells
No residual tumor
010Tumor Regression Grade 1
Moderate Response - Single 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
888OBSOLETE DATA CONVERTED V0200
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.)
998No preoperative treatment or no surgery
No histologic confirmation
990Response present, but degree of response not further described
999Unknown if response to treatment present
Not documented in patient record