Prospective single-center feasible study of innovative autorelease bile duct supporter to delay adverse events after endoscopic papillectomy

Table 1 Baseline characteristics of patients with papillary adenoma

No.	Sex	Age in yr	Tumor size in mm	Biopsy pathology
1	M	59	20	Tubular adenoma
2	M	60	15	Tubular adenoma and HGD
3	M	49	32	Adenomatoid hyperplasia and LGD
4	M	44	20	Tubular adenoma
5	M	50	10	Neuroendocrine tumor (stage G1)
6	F	86	40	HGD
7	M	56	43	Tubular adenoma and HGD
8	F	52	20	Tubular adenoma

M: Male; F: Female; LGD: Low-grade dysplasia; HGD: High-grade dysplasia.

Table 2 Endoscopic resection results at baseline and follow-up

No.	Tumor size in mm2	Lifting sign	Operation time in min	En bloc or piecemeal	Autorelease at 2 wk	Complications	R0 resection	Depth of invasion	Lesion pathology
1	5.495	(+)	11	En bloc	(+)	(-)	(+)	Mucosa	Tubulovillous adenoma/HGD
2	8.635	(+)	27	En bloc	(-)	(-)	(-)	Submucosa	Tubulovillous adenoma/HGD
3	9.734	(+)	21	En bloc	(+)	(-)	(+)	Mucosa	Adenomatoid hyperplasia/LGD
4	6.28	(+)	8	En bloc	(+)	(-)	(+)	Mucosa	Tubular adenoma
5	4.71	(+)	16	En bloc	(+)	(-)	(+)	Mucosa	Neuroendocrine tumor, stage G2
6	9.42	(+)	25	Piecemeal	(+)	(-)	(+)	Muscularis mucosa	Tubular adenoma/HGD
7	11.618	(+)	16	Piecemeal	(+)	(-)	(+)	Submucosa	Tubulovillous adenoma/HGD
8	4.71	(+)	13	En bloc	(+)	(-)	(+)	Mucosa	Tubular adenoma/LGD

LGD: Low-grade dysplasia; HGD: High-grade dysplasia.