Relationship between gastric mucosal atrophy by endoscopy and non-ampullary duodenal epithelial tumors

Table 4 Relationship between the Helicobacter pylori infection status and gastric-type non-ampullary duodenal epithelial tumors position, n (%)

Variable	Category	Helicobacter pylori		P value
		Previous or current, n = 8	Uninfected, n = 8
Atrophy	C-0 to C-3	8 (100.0)	8 (100.0)
	O-1 to O-p	0 (0.0)	0 (0.0)
Position	Part 1	8 (100.0)	3 (37.5)	0.026
	Part 2	0 (0.0)	4 (50.0)
	Part 3	0 (0.0)	1 (12.5)

C0 to C3: No or mild endoscopic gastric mucosal atrophy from the antrum to the cardia; O1 to Op: Severe endoscopic gastric mucosal atrophy extending from the cardia to the greater curvature; Part 1: Bulb; Part 2: Region from the superior duodenal angle to the papilla; Part 3: Region from the anal side of the papilla to the horizontal part.