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Table 1 The clinical and pathological features of 33 cases of low-grade central osteosarcoma with areas of high-grade (grade 3)

From: High-grade focal areas in low-grade central osteosarcoma: high-grade or still low-grade osteosarcoma?

Case

Age/sex

Site

% high-grade (grade 3) areas

Histotype

Adjuvant chemotherapy

Local recurrence (months after surgery)

Metastases (months after surgery)

Follow-up (months after surgery)

1

56/F

Distal femur

2

Osteoblastic

No

  

NED (55)

2

39/M

Proximal humerus

4

Fibroblastic (fibrous dysplasia-like)

Yes

 

Lung (13)

DOD (39)

3

19/M

Distal femur

4

Osteoblastic

No

  

NED (157)

4

34/F

Proximal humerus

4

Fibroblastic

No

  

NED (120)

5

35/F

Distal femur

4

Fibroblastic

Yes

  

NED (225)

6

44/M

Proximal humerus

4

Fibroblastic

Yes

  

NED (56)

7

23/M

Distal femur

4

Fibroblastic

Yes

  

NED (69)

8

25/F

Distal femur

4

Fibroblastic

No

Yes (53)

 

NED (284)

9

13/F

Clavicle

9

Fibroblastic (fibrous dysplasia-like)

Yes

  

NED (103)

10

22/F

Proximal femur

9

Fibroblastic

Yes

  

NED (132)

11

32/F

Proximal humerus

9

Fibroblastic

No

  

NED (109)

12

58/F

Proximal femur

11

Fibroblastic

No

  

DOC (136)

13

27/M

Proximal tibia

16

Fibroblastic

No

  

NED (231)

14

45/M

Distal tibia

16

Fibroblastic

Yes

  

NED (45)

15

24/F

Distal femur

16

Osteoblastic

Yes

  

NED (45)

16

41/M

Proximal tibia

16

Osteoblastic

No

  

NED (89)

17

55/F

Pelvis

31

Osteoblastic

Yes

  

NED (33)

18

28/M

Proximal humerus

31

Fibroblastic (fibrous dysplasia-like)

No

 

Bone thoracic vertebra (51)

NED (57)

19

50/M

Distal femur

35

Fibroblastic

No

  

NED (262)

20

21/M

Distal femur

40

Fibroblastic

Yes

  

NED (151)

21

42/M

Proximal femur

51

Fibroblastic

Yes

Yes (21)

Lung (46; 65)

DOD (108)

22

38/F

proximal humerus

51

Fibroblastic (fibrous dysplasia-like)

Yes

  

NED (134)

23

59/M

Proximal humerus

51

Fibroblastic

Yes

 

Lung (37; 85)

NED (137)

24

35/F

Distal ulna

51

Fibroblastic

Yes

  

NED (4)

25

25/M

Lumbar vertebra

51

Fibroblastic

Yes

  

NED (10)

26

24/M

Proximal humerus

51

Osteoblastic

Yes

  

NED (65)

27

40/M

Proximal tibia

81

Fibroblastic

Yes

 

Lung (10)

DOD (32)

28

53/F

Proximal tibia

81

Fibroblastic

Yes

Yes (2)

 

DOD (5)

29

46/F

Distal femur

81

Fibroblastic

Yes

 

Lung (14;38;50)

NED (132)

30

49/F

Distal femur

81

Chondroblastic

Yes

  

NED (164)

31

42/F

Pelvis

81

Fibroblastic

Yes

  

NED (27)

32

20/F

Proximal femur

81

Chondroblastic

No

  

NED (250)

33

48/F

Distal femur

81

Fibroblastic

Yes

  

NED (322)