
Keywords: ESCC، کارسینوم سلول سنگفرشی مری; ESCC, esophageal squamous cell carcinoma; ESD, endoscopic submucosal dissection; IQR, interquartile range; LNM, lymph node metastasis; LVI, lymphovascular invasion; RFA, radiofrequency ablation; SMG, submucosal gland; USL, unstained lesion