Application of endoscopic submucosal dissection in duodenal space-occupying lesions

Table 1 Demographics and treatment strategy for the 23 patients

Serial number	Gender	Age(yr)	Lesion location	Diameter (mm)	Pathological hierarchy	Pathological result	En bloc resection/R0 resection	Complication	Length of hospital stay (d)	Follow-up time (mo)
1	Male	46	Descending distal segment	11	Mucosa	Low-grade intraepithelial neoplasia	Yes		5	21
2	Male	41	Anterior wall of the bulb	12	Submucosa	Gastrointestinal stromal tumors	Yes	Perforation	7	13
3	Male	63	Superior wall of the bulb	11	Submucosa	Neuroendocrine tumor	Yes		3	9
4	Female	65	Anterior wall of the bulb	11	Submucosa	Neuroendocrine tumor	Yes		5	39
5	Female	70	Anterior wall of the bulb	12	Mucosa	Adenomatous hyperplasia	Yes	Perforation	5	36
6	Male	69	Proximal descending segment	15	Mucosa	Tubular adenoma	Yes	Perforation	7	24
7	Male	74	Descending distal segment	11	Mucosa	Low-grade intraepithelial neoplasia	Yes		8	14
8	Female	45	Descending distal segment	16	Mucosa	Low-grade intraepithelial neoplasia	Yes		5	24
9	Male	49	Anterior wall of the bulb	15	Submucosa	Neuroendocrine tumor	Yes		7	29
10	Female	70	Anterior wall of the bulb	11	Mucosa	Adenomatous hyperplasia	Yes		3	46
11	Male	71	Superior angle of the bulb	12	Mucosa	Hyperplastic polypModerate chronic inflammation	Yes		7	45
			ProximalDescending segment	15	Mucosa
12	Female	71	Superior angle of the bulb	11 12	Submucosa	Ectopic pancreas	Yes	Perforation	7	39
13	Male	32	Ball-descending junction	11 12	Submucosa	Ectopic pancreas	Yes		6	6
14	Male	69	Descending distal segment	11	Mucosa	Low-grade intraepithelial neoplasia	Yes		4	45
15	Male	73	Anterior wall of the bulb	13	Mucosa	Hyperplastic polyp	Yes		6	27
16	Male	54	Anterior wall of the bulb	12	Submucosa	Neuroendocrine tumor	Yes		5	11
17	Female	47	Descending distal segment	11	Mucosa	Glandular hyperplasia with polypoid changes	Yes		4	34
18	Male	48	Proximal descending segment	20 22	Submucosa	Leiomyoma	Yes		10	11
19	Male	59	Posteriorwall of the bulb	11	Submucosa	Submucosal duodenal adenoma	Yes		6	8
20	Male	63	Descending distal segment	12	Mucosa	Low- and high-grade intraepithelial neoplasia	Yes		5	3
21	Female	66	Anterior wall of the bulb	12	Submucosa	Neuroendocrine tumor	Yes	Perforation	7	50
22	Female	40	Ball-descending junction	15	Submucosa	Submucosal lymphofollicular hyperplasia	Yes		5	34
23	Male	60	Ball-descending junction	11	Mucosa	Chronic inflammation of the mucosal tissue	Yes		5	26