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Table 4 Patients according to SGSCC

From: Prognostic impact of the “Sekhar grading system for cranial Chordomas” in patients treated with pencil beam scanning proton therapy: an institutional analysis

Tumor size (TED)n (%)
  < 2 cm8 (6)
 2 cm to 3.9 cm81 (57)
 4 cm to 5.9 cm51 (36)
  > 5.9 cm2 (1)
Tumor sitesn (%)
  ≤ 374 (52)
  > 368 (48)
Vascular involvementn (%)
  ≤ 173 (51)
  > 169 (49)
Intradural invasionn (%)
 No18 (13)
 Slight38 (27)
 With brainstem compression86 (60)
Recurrence after prior treatmentn (%)
 No121 (85)
 After surgery20 (14)
 After RT0 (0)
 After Surgery and RT1 (1)
Total Scoren (%)
  < 840 (28)
 8 to 1283 (59)
  > 1219 (13)
  1. SGSCC Sekhar Grading System for Cranial Chordoma, TED tumor equivalent diameter, RT radiotherapy