GSTM1 and Hypertension: There were no statistical differences between the LDG-HA (n = 55) and RDG-HA (n = 40) groups in terms of clinical-pathological characteristics such as age, gender, BMI, Hb, ALB, tumor diameter, previous abdominal surgeries, obstruction, bleeding, hypertension, diabetes, smoking, alcohol consumption, ASA scores, postoperative pathological staging, degree of differentiation, vessel invasion and nerve invasion (Table 1).