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J. Fuchs
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P1.08 - Poster Session with Presenters Present (ID 460)
- Event: WCLC 2016
- Type: Poster Presenters Present
- Track: Surgery
- Presentations: 1
- Moderators:
- Coordinates: 12/05/2016, 14:30 - 15:45, Hall B (Poster Area)
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P1.08-065 - Resection of Isolated Brain Metastasis Improves Outcome of Non Small-Cell Lung Cancer (NSCLC) Patients: A Retrospective Multicenter Study (ID 6132)
14:30 - 14:30 | Author(s): J. Fuchs
- Abstract
Background:
Metastatic non-small cell lung cancer (NSCLC) is an incurable disease. Selected patients with solitary brain metastasis from NSCLC can achieve long-term survival following metastasectomy. We analyzed the outcome of all consecutive and unselected patients undergoing resection of brain metastases in two cancer centers in Switzerland to assess safety and efficacy of brain metastasis resection in NSCLC.
Methods:
119 consecutive NSCLC patients undergoing surgical resection of brain metastases from two centers in Switzerland (University Hospital Basel, Cantonal Hospital St. Gallen) between 2000 and 2014 were analyzed. Measured outcomes were extent of resection, resection status, postoperative complications and overall survival (OS). We used the log-rank test to compare unadjusted survival probabilities and multivariable Cox regression to investigate potential prognostic factors with respect to OS.
Results:
Median age was 60.5 years, 56% were male, 74% were smokers, 55% had adenocarcinoma. Median OS of the whole cohort was 18.0 months. 1-year survival rate was 63%, 12% of patients were alive after 5 years. In total, 146 brain metastases were resected; the maximum number of resected metastases was 4 (median: 1). Median diameter of resected metastases was 25 millimeters (range, 6-70 mm). About half of metastases were localized in the frontal cortex or the cerebellum. 86% of patients received postoperative radiotherapy. 63% of patients were treated with whole brain radiation, 12.6% received stereotactic radiotherapy. Median dose of postoperative radiotherapy was 30 Gy. Patients not receiving adjuvant radiotherapy (n=11) had a significantly worse outcome (median OS 9.0 vs. 20.2 months, p=0.002). Patients with more than one brain metastasis (n=21) had a significantly worse outcome compared to those with a solitary metastasis (median OS 13.5 vs. 19.5 months, p=0.006). Also patients with extracerebral metastases (n=33) had a significantly poorer outcome (median OS 14.0 vs. 23.1 months, p=0.005). Patients with non-squamous histology (n=98) had a better outcome than patients with squamous cell carcinoma (median OS 22.6 vs. 12.0 months, p=0.019). 21% of patients experienced postoperative complications, including need for surgical reintervention (5.8%), neurological deficits (4.2%), infection (4.2%), stroke (3.4%) and others (11.8%). The occurrence of postoperative complications was not associated with outcome. In the multivariate analysis existence of extracerebral metastases and resection of more than one brain metastasis were independent negative prognostic factors.
Conclusion:
Patients with isolated brain metastasis from NSCLC in the absence of extracranial metastasis should be evaluated for metastasectomy. Prospective trials are needed to characterize the patient population experiencing the greatest benefit from a surgical procedure.
