Endoscopic papillectomy: Data of a prospective observational study

Table 5 Characteristics of patients with a malignant tumor lesion (adenocarcinoma, neuroendocrine tumor and lymphoma) after endocopic papillectomy n (%)

	In total	Resection status
		R0	Rx	R0 + Rx	R1	R2
All stages
Case	18	8 (44.4)	2 (11.1)	10 (55.5)	1 (5.5)	7 (38.8)
Recurrency		1 (12.5)	1 (50.0)	2 (20.0)
T1 stage only
Case	12	8 (66.7)	1 (8.3)	9 (75.0)	1 (8.3)	2 (16.6)
Recurrence		1 (12.5)	0 (0.0)	1 (11.1)

Rx, resection status could not be defined because of loss of specimen or no detectable adenoma cells in the resected specimen despite adenoma finding in the histopathological investigation of the preinterventional biopsy. Recurrence, only related to "R0 + Rx" according to the definition of recurrent tumor growth, namely, tumor-free resection area.