Abstract
We experienced a case of Luminal B recurrent breast cancer with liver and lymph node metastases achieving significant improvement by S-1 plus trastuzumab combination therapy. This patient was a 47-year-old woman. Trastuzumab monotherapy was administered after recurrence, but her condition grew worse. Thus, we started combination therapy of trastuzumab plus S-1. S-1 was administered orally at 100 mg/day every day for 4 weeks followed by a 1-week rest period as one course, and trastuzumab was then injected at 2 mg/kg every week. All metastases disappeared after two courses of the treatment, and no new malignant lesions appeared. In conclusion, combination therapy of S-1 plus trastuzumab could be effective treatment for maintaining good QOL in Luminal B recurrent breast cancer with lymph node and liver metastases.
MeSH terms
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Antibodies, Monoclonal / administration & dosage
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Antibodies, Monoclonal / therapeutic use*
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Antibodies, Monoclonal, Humanized
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Antineoplastic Combined Chemotherapy Protocols / therapeutic use*
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Breast Neoplasms / diagnostic imaging
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Breast Neoplasms / drug therapy*
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Breast Neoplasms / pathology
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Drug Combinations
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Female
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Humans
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Liver Neoplasms / diagnostic imaging
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Liver Neoplasms / drug therapy*
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Liver Neoplasms / secondary
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Lymphatic Metastasis / diagnostic imaging
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Middle Aged
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Oxonic Acid / administration & dosage
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Oxonic Acid / therapeutic use*
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Recurrence
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Salvage Therapy
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Tegafur / administration & dosage
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Tegafur / therapeutic use*
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Tomography, X-Ray Computed
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Trastuzumab
Substances
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Antibodies, Monoclonal
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Antibodies, Monoclonal, Humanized
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Drug Combinations
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S 1 (combination)
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Tegafur
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Oxonic Acid
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Trastuzumab