Methods: We retrospectively evaluated the post-recurrence survival of 37 cases with brain metastases out of 439 consecutive resected cases of primary lung cancer between 2001 and 2017.
Findings: There was no difference in survival according to tumor size but survival was significantly shorter in patients with larger numbers of tumors. Patients initially treated with stereotactic radiosurgery(SRS)or surgical resection survived longer than those with whole-brain irradiation(WBI)(median survival: 23 months for SRS, 17 months for surgical resection, and 4 months for WBI: p<0.001 between SRS and WBI).
Conclusions: As SRS is recommended for 1-4 tumors with maximum diameters ofC3 cm and surgical resection is recommended for tumors larger than 3 cm, these effective locoregional therapies should be aggressively adopted for local control of brain metastases with the aim of improved QOL and prolonged survival. Due to the deterioration of neurocognitive function, WBI should be avoided as initial treatment for brain metastases when effective locoregional therapy or systemic chemotherapy is available and reserved for leptomeningeal dissemination or miliary metastases.
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