Endoscopic and clinicopathological features of intramucosal, histologically mixed-type, low-grade, well-differentiated gastric tubular adenocarcinoma with the potential for late-onset lymph node metastasis

Table 6 List of LG-tub1 lesions measuring more than 20 mm with indications for ESD

Case number (same as Table 5)	Pure/mixed component	Age	Sex (M/F)	Maximum diameter (mm)	Macroscopic type (0-IIa/0-IIb/0-IIc^a)	Colour on WLE (W/Iso/R)	Background mucosal atrophy (C-I, II, III, O-I, II, III^b)	DL on NBI-ME	H. pylori status	Mucin phenotype (G/GI/I)
1	Pure	60	M	27	0-IIa	W	O-I	Clear	+	I
2	Pure	79	F	26	0-IIa	W	O-III	Clear	–	I
3	Pure	68	M	24	0-IIa	W	O-III	Clear	+	I
4 (11)	HG-tub1	77	M	70	0-IIb	Iso	O-III	Partly unclear	–	GI
5 (12)	HG-tub1	65	M	43	0-IIb	Iso	O-II	Partly unclear	+	GI
6 (1)	HG-tub2-por2	93	M	31	0-IIb	Iso	O-III	Clear	–	G

LG-tub1 low-grade, well-differentiated tubular adenocarcinoma; ESD endoscopic submucosal dissection; M male; F female; U upper-third; M middle-third; L lower-third portion of the stomach; WLE white light endoscopy; W whitish; Iso isochromatic; R reddish; DL demarcation line; NBI-ME narrow-band imaging with magnifying endoscopy; G gastric; GI gastrointestinal; I intestinal mucin phenotype; HG high-grade; Tub2 moderately differentiated tubular adenocarcinoma; Por2 non-solid type, poorly differentiated adenocarcinoma; ^a0-IIa superficial elevated; 0-IIb superficial flat; 0-IIc superficial depressed type [3]; ^bKimura-Takemoto classification [24]

ISSN: 1471-230X