Table 3 Rate of reporting of peritoneal and circumferential resection margin involvement and extramural vascular invasion by total number of lymph nodes retrieved in the study population
Number of nodes examined | |||||||||
|---|---|---|---|---|---|---|---|---|---|
0–6 | 7–12 | >12 | Unknown | ||||||
Characteristics | n | % | n | % | n | % | n | % | |
Peritoneal involvement | Yes | 304 | 26.2 | 417 | 35.9 | 426 | 36.7 | 13 | 1.1 |
No | 1295 | 31.5 | 1536 | 37.4 | 1245 | 30.3 | 35 | 0.9 | |
Unknown | 193 | 28.6 | 265 | 39.2 | 185 | 27.4 | 33 | 4.9 | |
EMVI | Yes | 215 | 20.3 | 390 | 36.8 | 450 | 42.4 | 6 | 0.6 |
No | 804 | 25.6 | 1221 | 38.9 | 1099 | 35.0 | 15 | 0.5 | |
Unknown | 773 | 44.2 | 607 | 34.7 | 307 | 17.6 | 60 | 3.4 | |
CRM (rectal cases only) | Yes | 66 | 25.4 | 91 | 35.0 | 99 | 38.1 | 4 | 1.5 |
No | 374 | 31.1 | 456 | 37.9 | 362 | 30.1 | 11 | 0.9 | |
Unknown | 98 | 41.4 | 69 | 29.1 | 54 | 22.8 | 16 | 6.8 | |