There was no statistical difference between the two cohorts in terms of the variables gender, age, morphological subtype, tumor length, location, clinical symptom, immunohistochemical result, the thickness of esophageal tumor wall, Ki-67 (%), cTNM stage, treatment strategy, tumor margin, necrosis, calcification, enhanced homogeneity, enhanced pattern, and enhanced degree. The gene discussed is MKI67; the disease is neoplasm.