Table 1.
Patient and lesion characteristics and outcomes of treatment
| Patient characteristics | |
|---|---|
| Age, mean (SD), years | 62.3 (14.5) |
| Sex, male/female, n (%) | 6 (66.7)/3 (33.3) |
| ASA grade I/II, n (%) | 3 (33.3)/6 (66.7) |
| Lesion characteristics | |
| Location: rectum/ sigmoid colon, n (%) | 5 (55.6)/4 (44.4) |
| Treatment-naïve lesion, n (%) | 6 (66.7) |
| Pretreated lesion (previous EMR), n (%) | 3 (33.3) |
| Paris classification: 0–Is/0–IIa/0–IIa + Is/0–IIa + IIc, n (%) | 0/3 (33.3)/5 (55.6)/1 (11.1) |
| JNET classification: type 2A/Type 2B, n (%) | 7 (77.8)/2 (22.2) |
| Surface pattern: granular/non granular/granular mixed | 0/3 (33.3)/6 (66.7) |
| SMSA scoring system: median (range) | 14 (12—16) |
| Lesion size: mean (SD), cm2 | 64.02 (31.2) |
| Histology: LGIEN/HGIEN, n (%) | 5 (55.6)/4 (44.4) |
| Outcomes of treatment | |
| Successful rate of DEA-ESD, n (%) | 9 (100.0) |
| Procedure time: mean (SD), minutes | 128.4 (54.1) |
| Resection speed: mean (SD), minutes/cm2 | 2.26 (1.06) |
| Resection: En bloc/piecemeal, n (%) | 9 (100.0)/0 (0.0) |
| R0 resection: R0/R1–Rx, n (%) | 9 (100.0)/0 (0.0) |
| Complications (CTCAE grade)a, n (%) | 0 (0.0) |
| Recurrence at 3 months after index ESD, n (%) | 0 (0.0) |
SD standard deviation, ASA American Association of Anesthesiologists, EMR endoscopic mucosal resection, JNET Japan NBI Expert Team, LGIEN low-grade intraepithelial neoplasia, HGIEN high-grade intraepithelial neoplasia, SMSA size, morphology, site, and access score, ESD endoscopic submucosal dissection
aIncluding delayed bleeding, perforation, stenosis, and pain CTCAE, Common Terminology Criteria of Adverse Events (version 4.0)