Fig. 3

The survival curves of 154 patients with pT1b esophageal squamous cell carcinoma A Recurrence-free survival curves stratified by the count of lymphatic vessel invasion detected by D2-40 + CK (AE1/AE3) double immunohistochemistry (D2-40-LI). B Distant metastasis-free survival curves stratified by the count of D2-40-LI. C Overall survival curve stratified by the count of D2-40-LI. D Recurrence-free survival curves stratified by vascular invasion detected by CD31 + CK (AE1/AE3) double immunohistochemistry (CD31-VI). E Distant metastasis-free survival curves stratified by CD31-VI. F Overall survival curves stratified by CD31-VI. G Recurrence-free survival curves stratified by vascular invasion detected by elastin staining + CK (AE1/AE3) immunohistochemistry (E-VI). H Distant metastasis-free survival curves stratified by E-VI. I Overall survival curves stratified by E-VI