Background: Increased rates of long-term survival after CRC diagnosis are accompanied by increases in the incidence of BMs. Here, we retrospectively evaluated the outcomes of patients with BMs from CRC.
Materials And Methods: We reviewed the records of 1364 patients with CRC treated between January 1999 and December 2010 at Kinki University Hospital in Japan. Twenty-five of these patients developed BMs. Log-rank tests and Cox regression analyses were used to assess potential prognostic factors for survival.
Results: Among the patients with BMs, BMs developed a median of 25.3 (range, 11.4-111) months after primary CRC surgery. There was a median of 2 BMs per patient. Eleven patients had solitary BMs. Concomitant extracerebral metastases, particularly lung metastases, were found in 23 patients. Twenty-three patients were receiving systemic chemotherapy at the time of diagnosis with BMs. After the development of BMs, the median survival time (MST) was 2.8 months. The MST was 4.8 months among patients who underwent neurosurgical resection (n = 6) or stereotactic surgery (n = 9, including combined therapy in 2 patients) and 1.5 months among patients who underwent whole-brain radiotherapy only or best supportive care (n = 12). In multivariate analysis, single BMs and additional systemic chemotherapy after BMs diagnosis were significantly associated with overall survival (P = .022 and .023, respectively).
Conclusion: Our results suggest that advancements in continuing systemic chemotherapy prolong survival among patients with BMs from CRC. Clinicians should be especially aware of BMs in patients with lung metastases.
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