Table 4. Types of esophageal epithelium directly over ESMGs and amount of ductal metaplasia associated with epithelial types.

Type of epithelium overlying each ESMG was assessed after the initial blinded scoring. In HGD/EAC cases, there were several instances where a squamous island was associated with ESMG. Those ESMGs had low-levels of ductal metaplasia. In contrast, HGD/EAC as well as SCC and ulcer were associated with ESMGs in the submucosa. Overlying epithelium could not be determined for a small number of ESMGs in the HGD/EAC group.

EAC (143 ESMGs)			Non-EAC (698 ESMGs)
	# ESMGs	Mean proportion ductal metaplasia in ESMGs		# ESMGs	Mean proportion ductal metaplasia in ESMGs
Squamous epithelium	74	15.6%	Squamous epithelium	551	10.8%
Squamous island	17	5.4%
BE	28	11.8%	BE	8	26.9%
Columnar	11	20.9%
EAC	13	37.3%	SCC	58	28.3%
			Gastroesophageal Junction	36	8.5%
			Ulcer	11	54.4%
			Peritonitis	34	5.0%