[A case of multiple pulmonary metastases from rectal cancer effectively treated by TS-1 and low-dose CDDP therapy].

We report a patient with multiple pulmonary metastases from rectal cancer effectively treated with TS-1 and low-dose CDDP combination chemotherapy. The patient was a 61-year-old man with rectal cancer and multiple pulmonary metastases. He had undergone abdominoperineal excision of the rectum at another hospital before this hospitalization. After the operation, we treated the patient by the combination chemotherapy of TS-1 and low-dose CDDP during his hospital stay and in the outpatient clinic after hospital discharge. After the chemotherapy was started, tumor markers decreased, and finally were in the normal range. The pulmonary metastatic lesions were remarkably reduced on CT, and the effect of this therapy was PR. No severe side effect was observed throughout the treatment. This combination chemotherapy is considered to be an effective therapy for colorectal cancer with good QOL.