Usefulness of magnifying endoscopy for iodine-unstained lesions in a high-risk esophageal cancer population

Table 1 Patient inclusion and exclusion criteria

Inclusion criteria	Exclusion criteria
Old age (> 55 yr old)	Dysphagia
Smoking (> 5 d/wk)	Recent upper GI hemorrhage
Alcohol intake (> 5 d/wk)	Liver cirrhosis
History of non-esophageal primary cancer	Cardiac or coagulation disorder

Table 2 Characteristics of the patients

Age (yr)	61.4 (43-86)
Sex (M:F)	24:4
Smoking amount (packs/yr)	29.4 (14 patients)
Alcohol intake dose (g/wk)	367 (6 patients)
History of non-esophageal carcinoma	Stomach cancer: 10, Breast cancer: 1

Table 3 Relationship between types of papilla pattern and dysplasia

	Type A	Type B	Type C
Dysplasia (-)	10	14	9
Dysplasia (+)	1	3	6
Dysplasia/total	1/11 (9%)	3/17 (18%)	6/15 (40%)

All patients with dysplasia had low-grade dysplasia.