PMID: 25731219Mar 4, 2015Paper

A review of stereotactic radiotherapy (SRT) for lung metastasis of colon cancer

Gan to kagaku ryoho. Cancer & chemotherapy
Takeshi SaitoKenichi Hakamada

Abstract

We retrospectively analyzed the efficacy of stereotactic radiotherapy (SRT) for lung metastasis of colon cancer, with particular emphasis on local tumor control. Seven patients with 8 lesions underwent SRT for lung metastasis of colon cancer in our institution between February 2012 and February 2014. We judged the curative effect of SRT on the basis of tumor shrinkage observed on computed tomography (CT) scans. All lung metastases decreased in size, and local recurrence was not observed. SRT is a technique involving three-dimensional radiation, which decreases radiation exposure to neighboring normal tissues. The 2-year local tumor control rate for lung metastasis of colon cancer with SRT is 77.9%, and the 2-year survival rate is 53.7%. Our results, in which all patients achieved local control, suggest that SRT is a minimally aggressive treatment option for lung metastasis of colon cancer in cases where a pneumonectomy is difficult to perform. In the future, results from long-term studies are needed to validate our findings.

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