Table 1.

Characteristics of the patients.

Patients – n	49
Lesions – n	56
Age – mean ± SD	61.5 ± 10
Sex – n (%)
Male	36 (74%)
Female	13 (26%)
Charlson comorbidity score – mean ± SD	5 ± 2
History of – n (%)
Cirrhosis	12 (24%)
ENT cancer	11 (22%)
Antiplatelet therapy – n (%)	8 (14%)
Chronic alcohol abuse – n (%)	20 (45%)
Tobacco user – n (%)	22 (52%)
History of thoracic radiotherapy – n (%)	15 (31%)
Pre-ESD histology – n (%)
Low grade dysplasia	2 (4%)
High grade dysplasia	15 (27%)
Squamous cell carcinoma	39 (69%)

ENT: ear, nose, and throat; ESCC: early squamous cell carcinoma; ESD: endoscopic submucosal dissection; SD: standard deviation