Table 3.
Locationsa of dysplasia on colonoscopy and colectomy for the undetected and detected CRC groups
| CRC location at colectomy | Dysplasia location on most recent colonoscopy |
|
|||
|---|---|---|---|---|---|
| Leftb | Rightc | Rectum | Total | Discordance rate (n, %) | |
| Undetected CRC | |||||
| Left | 3 | 0 | 1 | 4 | 1 (25%) |
| Right | 1 | 7 | 0 | 8 | 1 (13%) |
| Rectum | 2 | 3 | 1 | 6 | 5 (84%) |
| Detected CRC | |||||
| Left | 14 | 2 | 0 | 16 | 2 (13%) |
| Right | 4 | 11 | 0 | 15 | 4 (27%) |
| Rectum | 4 | 3 | 19 | 26 | 7 (27%) |
a
Patients with multifocal dysplasia were categorized as having both left- and right-sided lesions
b
Dysplasia in the left colon
c
Dysplasia in the right colon including transverse colon