Simplified criteria for diagnosing superficial esophageal squamous neoplasms using Narrow Band Imaging magnifying endoscopy

Table 1 Demographics of patients and lesions, n

Number of patients	n= 147
Age (yr), median (range)	67 (39-86)
Male, n (%)	130 (88%)
History of cancers (head and neck/esophagus)	85/74
Drinking history
Number of drinkers	134
Drinking duration (yr), median (range)	40 (10-68)
Number of flushers	102
Smoking history
Number of smokers	129
Smoking (yr), median (range)	35 (3-70)
Number of lesions	89
Diameter of lesions (mm), median (range)	15 (4-100)
Histology (SCC/HGIN/LGIN/inflammation)	48/6/27/8
Superficial esophageal squamous cell carcinoma (including HGIN)	54
Diameter (mm), median (range)	19 (4-100)
Macroscopic type; n, (0-I/0-IIa/0-IIb/0-IIc /0-III)	5/2/25/21/1
Depth of invasion; n, (HGIN/EP, LP/MM- SM1/SM2/unknown1)	3/29/7/3/12
Treatment; n, (ER/SR/CRT/others)	32/11/5/6

¹Only biopsy was obtained. SCC: Squamous cell carcinoma; HGIN: High-grade intraepithelial neoplasia; LGIN: Low-grade intraepithelial neoplasia; EP: Epithelium; LPM: Lamina propria mucosae; MM: Muscularis mucosae; SM: Submucosae; ER: Endoscopic resection; SR: Surgical resection; CRT: Chemoradiotherapy.