Table 1.

Clinicopathological characteristics of all SNADETs (n = 62)

Mean age, years [range]	66.4 [41–89]
Gender (male/female)	40/22
Operative method (EMR/ESD)	43/19
Tumor location (first/second/third portion)	24/33/5
Mean tumor size, mm [range]	12.7 [2–35]
Coloration (red/isochromatic or white)	30/32
Macroscopic type (0-I/0-IIa/0-IIc)	18/33/11
Mucin phenotype (gP/IP/MP/UP)	11/43/7/1
Vienna classification (category 3/category 4 or 5)	32/30

SNADETs, superficial non-ampullary duodenal epithelial tumors; EMR, endoscopic mucosal resection; ESD, endoscopic submucosal dissection; GP, gastric phenotype; IP, intestinal phenotype; MP, mixed phenotype; UP, unclassified phenotype.