Table 4.

Pathological findings.

	ALL n = 74	EP n = 43	PD n = 31	p-value
Type of tumors, n (%)
Adenoma	34 (45.9)	32 (74.4)	2 (6.5)	< 0.001
Adenocarcinoma	40 (54.1)	11 (25.6)	29 (93.5)	< 0.001
Tis	16 (40.0)	8 (72.7)	8 (27.6)	0.569
T1a	24 (60.0)	3 (27.3)	21 (72.4)	< 0.001
Lymphovasucular invasion	2 (5.0)	0	2 (6.9)	0.172
Lymph node metastasis	0	–	0
Histologic type of adenocarcinoma
Papillary adenocarcinoma	5 (12.5)	1 (9.1)	4 (13.8)	1.000
Well differentiated adenocarcinoma	33 (44.6)	10 (23.3)	23 (74.2)	0.649
Poorly differentiated adenocarcinoma	1 (2.5)	0	1 (3.4)	1.000
Mucinous adenocarcinoma	1 (2.5)	0	1 (3.4)	1.000
Median tumor size, mm (range)	20 (10–65)	20 (12–39)	20 (10–65)	0.779

EP endoscopic papillectomy, PD pancreatoduodenectomy.