Table 1 Tumor characteristics in 33 patients by pathological downstaging vs. no pathological downstaging
From: Sphincter preservation in distal CT2N0 rectal cancer after preoperative chemoradiotherapy
No pathological downstaging (n = 19) | Pathological downstaging (n = 14) | Characteristics |
|---|---|---|
Pre-CRT serum CEA level (mcg/L), mean ± SD | 5.4 ± 4.7 | 15.9 ± 40.7 |
Tumor diameter (cm), median (range) | 4 (2-12) | 5 (1-13) |
Tumor fixation, % | 2 | 2 |
% circumference, median (range) | 50 (30-100) | 60 (30-100) |
Tumor grade, n (%) | Â | 2 (10) |
 1 | 4 (28) | 13 (68) |
 2 | 7 (50) | 4 (21) |
 3 | 3 (21) |  |
Mucin, n | 1 | 2 |
Lymphovascular or perineural invasion, n | 2 | Â |