| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2010: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Research Abstract |
In this context, we conducted a prospective study to evaluate whether preoperative Circulating tumor cells (CTC)-count predicts survival after pulmonary metastasectomy in patients with metastatic colorectal cancer. Preoperative CTC-count was quantitatively evaluated with a 7.5-mL of peripheral blood sample using CellSearchTM system. Based on previously published criteria, patients were divided into favorable group and unfavorable group according to preoperative CTC-count of < 3 or ≧ 3 /7.5mL, respectively. The estimated 5-year survival rates were 80.4% in favorable group (n=50) and 0% in unfavorable group (n=2). There was a significant difference in postoperative survival between favorable and unfavorable groups (p<0.001). An elevated preoperative CTC-count (CTC≧3 /7.5mL) is an independent poor prognostic factor in patients with metastatic colorectal cancer. Pulmonary metastasectomy in such cases should be reconsidered even when they meet conventional surgical criteria.
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