Clinical Factors of Delayed Perforation after Endoscopic Submucosal Dissection for Gastric Neoplasms

Table 1

Clinicopathological findings of 1199 early gastric neoplasms undergoing endoscopic submucosal dissection.

Clinicopathological findings	n (%)
Sex
Male	937 (78.1)
Female	262 (21.9)
Age
Median (range)	71 (41–92)
<70	524 (43.7)
≥70	675 (56.3)
Stomach status
Normal stomach	1151 (96.0)
Remnant stomach	33 (2.7)
Gastric tube	15 (1.3)
Location
Upper	222 (18.5)
Middle	510 (42.5)
Lower	467 (39.0)
Size (mm)
Median (range)	14 (1–73)
≤20	893 (74.5)
>20	306 (25.5)
Depth of invasion
M	1029 (85.8)
SM	170 (14.2)
Ulceration
Absent	1051 (87.7)
Present	148 (12.3)
Procedure time (hours)
<2	863 (71.8)
≥2	336 (28.2)

M: mucosa; SM: submucosa.