Overall survival of patients. (A) Patients with pT1–4 tumors (n = 92). Type G tumor group demonstrated higher overall survival rate compared with type E adenocarcinoma (AD) (P = 0.013) tumor group. Although not significantly, the type G tumor group had a higher survival rate than the type E squamous-cell carcinoma (SQ) (P = 0.366) and Ge (P = 0.850) tumor group. (B) Patients with pT2–4 Tumors (n = 59). The type E (AD) tumor group demonstrated significantly lower overall survival rate compared with the type Ge (P = 0.001) and type G (P = 0.003) tumor group. The type E (AD) tumor group had a lower survival rate than the type E (SQ) tumor group (P = 0.076) although not significantly.