TABLE 4.
Clinicopathological characteristics of the lesion resected by colectomy
| Outcomes | (n = 19) |
|---|---|
| Tumor size (mm), median (range) | 60 (10–140) |
| Paris classification, n (%) | |
| Type 0‐Is | 2 (11) |
| Type 0‐Ip | 1 (5) |
| Type 0‐IIb | 4 (21) |
| Type 0‐IIa | 5 (26) |
| Type 1 | 1 (5) |
| Type 2 | 3 (16) |
| Type 3 | 1 (5) |
| Type 4 | 1 (5) |
| Type 5 | 1 (5) |
| Location, n (%) | |
| Rectum | 9 (47) |
| Left‐sided colon | 7 (37) |
| Right‐sided colon | 3 (16) |
| Operative procedure, n (%) | |
| Total proctocolectomy | 17 (89) |
| Pelvic visceral resection | 1 (5) |
| Low anterior resection | 1 (5) |
| Histology, n (%) | |
| Low‐grade dysplasia | 6 (32) |
| Low‐grade adenocarcinoma | 7 (37) |
| High‐grade adenocarcinoma | 4 (21) |
| Sessile serrated lesion | 1 (5) |
| Squamous cell carcinoma | 1 (5) |
| T stage a , n (%) | |
| T0 (M) | 1 (5) |
| T1 (SM) | 1 (5) |
| T2 (MP) | 0 |
| T3 (SS) | 4 (21) |
| T4 (SE) | 3 (16) |
Abbreviations: M, mucosa; MP, muscularis propria; SS, subserosa; SE, serosa; SM, submucosa.
a
Tumor‐node‐metastasis staging is classified according to Japanese Classification of Colorectal, Appendiceal, and Anal Carcinoma: The 3d English Edition. For synchronous multiple lesions, tumor‐node‐metastasis staging was performed for the lesion with the highest tumor stage.