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Table 2 Characteristics of patients with BM

From: Risk factors of brain metastasis of lung squamous cell carcinoma: a retrospective analysis of 188 patients from single center

Variables No. %
BM
 Synchronous 16 44.4
 Metachronous 20 55.6
RPA
 I 8 22.2
 II 20 55.6
 III 8 22.2
GPA
 0-1 10 27.8
 1.5-2.5 17 47.2
 3 4 11.1
 3.5-4 5 13.9
Number of BM
 1 24 66.7
 2-3 5 13.9
 > 3 7 19.4
Presence of systemic metastasis at the time of BM
 No 9 25.0
 Yes 27 75.0
Treatments after BM
 Local therapy only 15 41.6
 Local + systemic therapy 21 58.4
Local therapy
 SRS 27(15)a 75.0
 WBRT 9(6) 25.0
  1. Abbreviations: BM Brain metastasis, RPA Recursive partitioning analysis, GPA Graded prognostic assessment, WBRT Whole brain radiation therapy, SRS Stereotactic radiosurgery
  2. aNumber in the blanket was number of patients receiving additional systemic therapy after local therapy