Table 1: Baseline demographic and

histopathological characteristics of patients diagnosed with

giant cell tumor of bone and treatment data (N = 97).

Variables

n (%)

Age in years, median [range]

30 [23-39]

Gender

Male

Female

38 (39)

59 (61)

BMI

25.7 [22.1-29.7]

Distance to INCan in km, median [range]

131 [37.5-277]

Tumour size in cm, median [range]

8.8 [6-11]

Skeletal distribution

Axial

Appendicular

17 (18)

80 (82)

Primary tumour site

Humerus and scapula

Wrist and hand

Sacrum and spine

Pelvis

Femur

Foot and ankle

Other sites

7 (7)

18 (18)

10 (11)

6 (6)

27 (28)

24 (25)

5 (5)

Campanacci grade

I/II

III

20 (20)

75 (77)

Joint or soft tissue involvement

48 (47)

Pathological fracture

22 (23)

Secondary aneurysmal bone cyst

8 (8)

Type of surgery

Curettage

Marginal/wide

Amputation

Adjuvant

Preoperative denosumab

Pulmonary metástasis

26 (26)

49 (50)

6 (6)

22 (23)

18 (19)

10 (10)

INCan = Instituto Nacional de Cancerología.