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Although chemotherapy for cholangiocellular carcinoma (CCC) is administered to those patients who are inoperable, the results are largely disappointing, especially for CCC producing parathyroid hormone-related peptide (PTHrP). We encountered a 43-year-old man with hypercalcemia due to PTHrP secretion of CCC. As the tumor was inoperable, we treated him with gemcitabine (GEM), S-1 and radiation. The tumor size was reduced 55% and the serum PTHrP level decreased markedly after the chemoradiotherapy. Although the patient died after 14 months, this case clearly suggests that the combined chemoradiotherapy of GEM, S-1 and radiation, may be useful for the treatment of CCC producing PTHrP.

Cholangiocarcinoma Producing Parathyroid Hormone-related Peptide Treated with Chemoradiation Using Gemcitabine and S-1