Long-term outcomes of endoscopic submucosal dissection for gastric dysplasia and early neoplasia in a United Kingdom Caucasian population

Table 2 Results of completed gastric endoscopic submucosal dissection procedures

Results of completed ESD procedures	Value, n = 101
Average length of hospital stay (day/s), mean ± SD (range)	1.60 ± 3.10 (0-30)
Number of 8-day readmission(s)	1
ESD technique
ESD	61
Hybrid ESD	40
Resection
En-bloc	75
Piecemeal	26
Margins clear on endoscopy, n (%)	96 (95.0)
Margins not clear on endoscopy, n (%)	5 (4.95)
Curative resection	35
Non-curative resection	34
For gastric dysplasia
HM not clear, VM clear	15
HM clear, VM not clear	0
Both HM and VM not clear	1
For early gastric neoplasia
Clear margins for cancer and dysplasia but submucosal invasion	5
Clear margins for cancer, but HM and/or VM not clear for dysplasia	2
Clear margins for cancer, but indeterminate for dysplasia	3
HM and/or VM not clear for cancer	7
Indeterminate margins for cancer and dysplasia	1
Indeterminate	29
End piece(s) affected by dysplasia, unable to confirm excision of dysplasia at HM	15
Poor tissue preservation	4
Piecemeal resections	8
Piecemeal and end pieces affected by dysplasia	2
Not assessable - index histology shows no dysplasia or indefinite for dysplasia	3

ESD: Endoscopic submucosal dissection; HM: Horizontal margin; VM: Vertical margin.