The patient was a 63-year-old man who suffered from advanced pancreatic cancer (T 4 N 3 M 0, Stage IVb). Palliative operation was performed for obstructive jaundice. He was treated with chemotherapy of gemcitabine (GEM) alone as first-line, and combined chemotherapy of GEM and S-1 as second-line. Both therapies were effective for this patient. Tumor marker (CA 19-9) decreased after chemotherapies (first-line: 5,692 U/mL to 70 U/mL, second-line: 4,877 U/mL to 562 U/mL). No toxic events were observed due to these therapies, so he was treated as an outpatient for about 2 years. It was considered that he had a good quality of life.
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