Feasibility of Endoscopic Resection for Sessile Nonampullary Duodenal Tumors: A Multicenter Retrospective Study

Table 1

Demographic features.

Number of patients	54
Number of lesions	56
Mean age (years ± SD^*)	59.5 ± 12.5
Male : female (%)	33 : 21 (61.1 : 38.9)
Histologic types (%)
Adenoma, low grade dysplasia	25 (44.6)
Adenoma, high grade dysplasia	11 (19.6)
Adenocarcinoma	2 (3.6)
Carcinoid tumor	18 (32.1)
Location (%)
1st portion	24 (42.9)
2nd portion	31 (55.4)
3rd portion	1 (1.8)
Size of the lesions (median (range), cm)^†
EP	1.2 (1.0~1.5)
EMR	0.8 (0.3~4.5)
ESD	0.8 (0.4~3.5)

SD: standard deviation.
^†Size of long axis.
EP: endoscopic polypectomy; EMR: endoscopic mucosal resection; ESD: endoscopic submucosal dissection.