Complete Response | Near Complete Response | Incomplete Response | |
---|---|---|---|
Endoscopy | Flat, white scar Telangiectasia No ulcer No nodularity | Irregular mucosa Small mucosal nodules or minor mucosal abnormality Superficial ulceration Mild persisting erythema of the scar | Visible tumor |
Digital Rectal Exam | Normal | Smooth induration or minor mucosal abnormalities | Palpable tumor nodules |
MRI-T2W | Only dark T2 signal, no intermediate T2 signal | Mostly dark T2 signal, some remaining intermediate signal | More intermediate than dark T2 signal, no T2 scar |
AND | AND/OR | AND/OR | |
No visible lymph nodes | Partial regression of lymph nodes | No regression of lymph nodes | |
MRI-DW | No visible tumor on B800-B1000 signal | Significant regression of signal on B800-B1000 | Insignificant regression of signal on B800-B1000 |
AND/OR | AND/OR | AND/OR | |
Lack of or low signal on ADC map Uniform, linear signal in wall above tumor is ok | Minimal or low residual signal on ADC map | Obvious low signal on ADC map |