[A case of breast cancer with thrombosis during treatment of lung metastasis].

A 74-year-old female with lung metastasis of breast cancer was treated with chemo-endocrine therapy (intravenous administration of epirubicin at 30 mg/2w, oral administration of UFT at 400 mg/day, alternate oral administration of medroxyprogesterone acetate at 800 mg/day and tamoxifen at 40 mg/day) and immuno-therapy (intravenous administration of lentinan at 2 mg/w). Lung tumors decreased in size and number. At the same time, deep vein thrombosis of the lower extremities occurred, which caused multiple pulmonary embolization. In this case, several factors were suggested to cause thrombosis in the advanced or recurrent breast cancer patient.