外来併用化学療法(Docetaxel，Estramustine，Dexamethasone)施行中ペラグラを発症した前立腺癌の2例

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An 81-year-old male with hormone refractory prostate cancer, received chemotherapy of Docetaxel, Estramustine and dexamethasone as an outpatient. After 4 courses of chemotherapy, he was admitted to our hospital in December 2007 because of general fatigue, appetite loss and erythema of the back of hands and face. He was diagnosed with pellagra. Nicotinic acid was administered and the symptoms disappeared. An 80-year-old male with hormone refractory prostate cancer, received chemotherapy of Docetaxel, Estramustine and dexamethasone without admission. After 8 courses of the chemotherapy, appetite loss appeared. In January 2008, medical examinations revealed nails peeling off, facial erythema and erosion of the back of his hands. He was diagnosed with pellagra. Nicotinic acid was administered and the symptoms disappeared. Pellagra, a nicotinic acid deficiency disease, is rarely observed clinically nowadays. However, it may occur in the patients, undergoing chemotherapy without admission.