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Table 1 Summary of 187 skull base chordoma patients

From: Mean platelet volume and platelet distribution width serve as prognostic biomarkers in skull base chordoma: a retrospective study

Variable Number of patients
Age, years, mean ± SD 40.1 ± 15.3
Sex
 Male 98
 Female 89
Tumour volume, mm3, mean ± SD (range) 31,729.8 ± 33,238.5 (1740.4–258,024.6)
Most Common symptoms
 Headache 88
 Diplopia 68
 Blurred vision 61
 Vision field defect 43
 Dizziness 30
Tumour texture
 Soft 57
 Hard/moderate 130
Tumour blood supply
 Rich 109
 Poor/moderate 78
Pathology type
 Classical 126
 Chondroid 61
 Dedifferentiated 0
Brainstem involvement
 No 69
 Yes 118
Posterior cranial nerve involvement
 No 118
 Yes 69
Surgical approach
 Endoscopic endonasal 73
 Endoscopic transoral 6
 Transcranial 108
Degree of resection
 Total resection 41
 Non-total resection 146
Postoperative radiotherapy
 No 115
 Yes 72
  Gamma knife 42
  Proton beam therapy 8
  Carbon ion therapy 1
  Cyberknife 1
  Intensity modulated radiotherapy 4
  Unknown 16
Median PLT, 109/L (range) 234 (104–501)
Median MPV, fl (range) 10.2 (6.7–14.2)
Median PDW, % (range) 11.8 (7.8–26.2)
Death during follow up 72
  1. SD standard deviation, PLT platelet count, MPV mean platelet volume, PDW platelet distribution width