Clinical outcomes of endoscopic papillectomy of ampullary adenoma: A multi-center study

Table 2 Techniques and outcomes of endoscopic papillectomy

	n (%)/mean ± SD (n = 106)
EUS	37 (34.9)
ERCP
Cholangiogram	70 (66.0)
Pancreatogram	87 (82.1)
Submucosal lifting	4 (3.8)
Type of resection
En-bloc	90 (84.9)
Piecemeal	16 (15.1)
Thermal ablation after resection	24 (22.6)
Complete endoscopic resection	105 (99.1)
Stent implantation
Bile duct	25 (23.6)
Pancreatic duct	78 (73.6)
Resection specimen size, mm	13.6 ± 5.5
≤ 15	77 (72.6)
> 15	29 (27.4)
Final pathology
Chronic inflammation	3 (2.8)
Adenoma
Low grade	81 (76.4)
High grade	18 (17.0)
Adenocarcinoma	4 (3.8)
Accuracy of endoscopic biopsy
Underestimate	18 (17.0)
Overestimate	4 (3.8)
Resection margin
Negative	84 (79.2)
Positive/Uncertain	22 (20.8)
Positive	19 (17.9)
Uncertain	3 (2.8)
Curative resection	81 (76.4)
Early recurrence	11 (10.4)
Late recurrence	13 (12.3)
Re-recurrence	6 (5.7)
Endoscopic success	99 (93.4)
Mean hospital stay, d	5.7 ± 3.0
Mean adenoma-free period, mo	29.6 ± 21.3

EUS: Endoscopic ultrasound; ERCP: Endoscopic retrograde cholangiography.