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Table 1 Patients and tumors characteristics

From: Secondary peripheral chondrosarcoma arising in solitary osteochondroma: variables influencing prognosis and survival

Factor Level Value (%)
Number of cases   214
Sex F 72 (33.6%)
  M 142 (66.4%)
Median age at diagnosis (IQR)a   38 (27–49)
Histological grade 1 112 (52.4%)
  2 98 (45.7%)
  3 4 (1.9%)
Axial No 78 (36.4%)
  Yes 136 (63.6%)
Median cartilage cap thickness (cm) (IQR)b   3 (2–5)
Median maximum tumor dimension (cm) (IQR)c   10 (7–14.5)
Surgical treatment Amputation 12 (5.6%)
  Complete resection 80 (37.4%)
  Debulking 53 (24.8%)
  Partial resection 54 (25.2%)
  Unknown 15 (7.0%)
Local recurrence/metastasis No 165 (77.1%)
  Yes 49 (22.9%)
Outcome at last follow-up Alive 177 (82.7%)
  Dead of disease 24 (11.2%)
  Dead of other/unknown causes 13 (6.1%)
  1. F, female; M, male
  2. a1 missing
  3. b65 missing
  4. c40 missing