[A case report of bone metastasis diagnosed by MRI and effectively treated with UFT after breast conserving therapy for breast cancer].

A 66-year-old woman with left breast cancer (medullary carcinoma; T1cN1M0; Stage II A) was treated with breast conserving therapy combined with lumpectomy, radiotherapy, chemotherapy and endocrine therapy beginning in March, 1990. She complained of back pain and was diagnosed as having bone metastasis to the lower thoracic spine by bone scintigram and MRI examination in September, 1990. Oral administration of UFT (300 mg/day) was started, and 5 months later, back pain disappeared; nineteen months later, no definite findings of bone metastasis were observed on bone scintigram and MRI. It was concluded that long-term oral administration of UFT is an effective remedy for bone metastasis after breast conserving therapy for breast cancer.