Interesting pulmonary metastasis from spindle cell carcinoma of the breast

We experienced a case of interesting pulmonary metastasis from spindle cell carcinoma of the breast. A 68-year-old female who had undergone a radical mastectomy 32 months earlier was admitted to our hospital for the pulmonary tumor in the left S10 in January 2005. Pathological study of the breast tumor revealed mixture of carcinomatous portion and sarcomatoid portion with spindle cells. Because of the presence of transitional areas from one portion to the other, the tumor was diagnosed as spindle cell carcinoma of the breast. Partial resection of the left lower lobe was performed. Pathological examination of the pulmonary tumor revealed that the tumor was composed of the component similar to carcinomatous element of the breast cancer. In June 2005, She was admitted to our hospital again for the pulmonary tumor in the right S7. Partial resection of the right lower lobe was performed. The tumor was composed of both carcinomatous and sarcomatoid elements. After operation, as she complained of epigastralgia, a gastroscopic examination was performed. It showed 2 white polypi of the stomach. The biopsy specimen of the polypi were composed of the tumor similar to the sarcomatoid element of the breast cancer. She died of widespread metastasis 43 months after mastectomy.