Figure 2

Kaplan–Meier survival analysis based on the cytoplasmic KIT expression of extrahepatic bile duct carcinoma. The median survival of cytoplasmic KIT expression group is not obtained because 23 of 49 patients are censored. The median survival time of the cytoplasmic KIT negative group is 30 months. Patients in the cytoplasmic KIT positive group show significantly better survival than those without cytoplasmic KIT expression (log-rank test, P=0.01).