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. 2023 Jan 4;11(1):E3–E10. doi: 10.1055/a-1968-7501

Table 1. Clinicopathological characteristics of patients and lesions.

Patients, n (lesion, n) 16 (20)
Sex, n (male/female) 12/ 4
Age, years, mean ± SD 69.2 ± 5.6
History of esophageal cancer, n 12

  • Endoscopic treatment

 10

  • Surgery with gastric tube reconstruction

 2
History of pharyngeal cancer, n 3

  • Endoscopic treatment

 2

  • CRT

 1
Location, n (%)

  • Hypopharynx

 18 (90)

  • Pyriform sinus

 15 (75)

  • Posterior pharyngeal wall

 2 (10)

  • Posterior cricoid area

 1 (5)

  • Oropharynx

 2 (10)

  • Posterior oropharyngeal wall

 1 (5)

  • Lateral oropharyngeal wall

 0 (0)

  • Epiglottic vallecula

 1 (5)
Tumor diameter, mm, mean ± SD 19.3 ± 11.2
Macroscopic type, n (%)

  • Elevated (IIa)

 2 (10)

  • Flat (IIb)

 14 (70)

  • Depressed (IIc)

 4 (20)
Depth of invasion, n (%)

  • CIS

 10 (50)

  • SEP

 10 (50)
Tumor thickness, n (%)

  •  < 500 μm

 16 (80)

  •  ≥ 500 μm

 4 (20)
Positive lymphovascular involvement, n (%) 0 (0)

CRT, chemoradiotherapy; CIS, carcinoma in situ; SEP, subepithelial invasion.