M.E.R.C.U.R.Y. I° | Complete | Mesorectum | Smooth, intact |
---|---|---|---|
 |  | Defects | Not deeper than 5mm |
 |  | Coning | No coning |
 |  | CRM | Smooth, regular |
M.E.R.C.U.R.Y. II° | Nearly complete | Mesorectum | Moderate bulk, irregular |
 |  | Defects | No visible muscularis propria |
 |  | Coning | Moderate |
 |  | CRM | Irregular |
M.E.R.C.U.R.Y. III° | Incomplete | Mesorectum | Little bulk |
 |  | Defects | Down onto muscularis propria |
 |  | Coning | Yes |
 |  | CRM | Irregular |