From: Clinical characteristics of synchronous colorectal cancers in Japan
 | Companion synchronous tumor location |  | ||
---|---|---|---|---|
Index tumor location | Right colon | Left colon | Rectum | K a |
Right colon (n = 26) | 17 | 11 | 2 |  |
Left colon (n = 37) | 10 | 35 | 8 |  |
Rectum (n = 21) | 8 | 9 | 9 | 0.30 |