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Table 1 Patient characteristics

From: Evaluation of particle radiotherapy for the re-irradiation of recurrent intracranial meningioma

Age at re-irradiation (years)  
  Mean (SD) 53 13,4
  Median (Q1-Q3) 53 47–61
  Median (range) 53 18–77
   n= %
Gender
  male 17 40,5%
  female 25 59,5%
Histology
  WHO I 10 23,8%
  WHO II 25 59,5%
  WHO III 6 14,3%
  unknown 1 2,4%
Location
  skull base 31 73,8%
  falx 6 14,3%
  convexity 5 11,9%
Karnofsky performance score
  ≥ 80% 34 81,0%
  <  80% 8 19,0%
Previous radiotherapy
  IMRT 16 38,1%
  3DCRT 16 38,1%
  SRS/FSRT 8 19,0%
  radiopeptide 1 2,4%
  carbon ions 1 2,4%
Recurrence
  infield / field border 38 90,5%
  outfield 4 9,5%
Particle therapy
  protons 8 19,0%
  carbon ions 34 81,0%