Management of brain metastases with stereotactic radiosurgery alone versus whole brain irradiation alone versus both

Abstract

Introduction

This prospective randomized study aimed to evaluate the role of WBRT + SRS compared to SRS alone and to WBRT alone in improvement of overall survival, brain local control and neurologic manifestations.

Patients and methods

The trial included 60 patients with 1 to 3 brain metastases treated at the Radiotherapy Department, National Cancer Institute. 21 patients received WBRT + SRS, 18 patients received SRS alone and 21 patients received WBRT alone.

Results

Median local control was significantly better for WBRT + SRS compared to SRS alone & WBRT alone (10 vs 6 vs 5 months, respectively, P = 0.04). There was non significant survival benefit for WBRT + SRS compared to SRS alone & WBRT alone. Survival was significantly better for patients with controlled primary tumor who received WBRT + SRS compared to SRS alone & WBRT alone (median survival was 12 vs 5.5 vs 8 months, respectively. P = 0.027). Regardless of the treatment group, median survival and median local control were highly significantly better for single brain site involvement compared to multiple brain sites involvement (P = 0.003 & P = 0.001, respectively), and median brain local control was significantly better for single lesion compared to multiple lesions (P = 0.05).

Conclusions

WBRT + SRS is an effective, safe tool in treatment of patients with 1 to 3 brain metastses improving the brain local control, but further studies with larger number of patients is recommended.