[Two Cases of Liver Metastasis from Pancreatic Cancer with a Complete Response Owing to Chemotherapy].

Case 1: The patient was a 42-year-old man who was diagnosed with intraductal papillary-mucinous carcinoma with liver metastasis. After S-1+gemcitabine and S-1 chemotherapy, the liver metastasis had disappeared and we performed a pancreaticoduodenectomy( PD). Case 2: The patient was a 70-year-old woman who was diagnosed with pancreatic cancer with liver metastasis. After gemcitabine chemotherapy, the liver metastasis had disappeared and we performed a PD. The prognosis of pancreatic cancer is dismal compared to other types of cancer, and for a Stage Ⅳb cancers, the 5-year survival rate is reported to be approximately 3%. We report 2 cases of liver metastases from pancreatic cancer that disappeared in response to chemotherapy. Both patients underwent primary tumor resection after chemotherapy and experienced long-term survival.