Relationship between ABO blood group and clinicopathological factors and their effect on the survival of Japanese patients with esophageal squamous cell carcinoma.

Purpose Several studies have evaluated the association between ABO blood group and the prognosis of various types of cancer; however, little is known about the relationship between ABO blood group and esophageal squamous cell carcinoma (SCC). We investigated how ABO blood group and clinicopathological characteristics are related to the survival of Japanese patients with esophageal SCC.