Two cases of intrahepatic cholangiocellular carcinoma with high insertion-deletion ratios that achieved a complete response following chemotherapy combined with PD-1 blockade ============================================================================================================================================================================== * Minghao Sui * Yu Li * Hongguang Wang * Ying Luo * Tao Wan * Xun Wang * Bingyang Hu * Yanshuang Cheng * Xianrong Lv * Xianlei Xin * Qiang Xu * Guan Wang * Shichun Lu