Table 1.
Characteristics of the patients and lesions
| Characteristics | Value | ||
|---|---|---|---|
| Patient data (n = 380) | |||
| Sex, male/female | 306/74 | ||
| Median age, y (range) | 72 (49–88) | ||
| Number of lesions, ESCC/noncancerous | 44/193 | ||
| Lesion data (n = 237) | |||
| ESCC (n = 44) | |||
| Location: Ce/Ut/Mt/Lt/Ae | 1/7/21/14/1 | ||
| Median diameter, mm (range) | 8 (3–50) | ||
| Macroscopic type: 0-I/0-IIa/0-IIb/0-IIc | 0/1/33/10 | ||
| Invasion depth†: EP/LPM/MM-SM2 | 17/17/0 | ||
| noncancerous (n = 193) | |||
| SIN/atypical epithelium/esophagitis/no malignancy/others‡ | 36/45/26/75/11 | ||
Ae, abdominal esophagus; Ce, cervical esophagus; ESCC, esophageal squamous cell carcinoma; EP, epithelium; LPM, lamina propria; Lt, lower thoracic esophagus; MM, muscularis mucosa; Mt, middle thoracic esophagus; SM, submucosa; SIN, squamous intraepithelial neoplasia; Ut, upper thoracic esophagus.
†Ten ESCCs diagnosed by biopsy were excluded from analysis of invasion depth.
‡e.g., glycogenic acanthosis and ectopic gastric mucosa