Fig. 2From: Clinical outcomes of previously untreated patients with unresectable intrahepatic cholangiocarcinoma following proton beam therapyKaplan-Meier curves showing the progression-free survival of patients who underwent proton beam therapy as primary treatment for intrahepatic cholangiocarcinoma. a Progression-free survival among all patients. b Comparison of progression-free survival between the curative and palliative groupsBack to article page