Table 1.

Clinical Features of Primary ABC

Case	Age (years)	Sex	Location*	Size (cm)	Treatment	Follow-up (mo)	Recurrence	Time for recurrence (mo)
1	2	M	Femur	4	Curettage	73	Y	30
2	2	F	Femur	N/A	Curettage	4	N
3	5	M	Pubis	5	Curettage	9	N
4	7	M	Femur	4	Curettage	9	Y	5
5	7	F	Tibia	5	Curettage	1	N
6	8	F	Tibia	5	Curettage	54	N
7	8	F	Fibula	2	Curettage	N/A	N/A
8	10	M	Calcaneous	4	Curettage	25	N
9	10	M	Tibia	N/A	Curettage	108	N
10	10	M	Femur	N/A	N/A	N/A	N/A
11	11	F	Mandible	1	Excision	N/A	N/A
12	11	M	Vertebra	5	Curettage	18	Y	2
13	11	M	Phalanx	1	Curettage	9	Y	6
14	11	M	Mandible	3	Curettage	21	Y	11
15	11	F	Humerus	3	Curettage	94	N
16	11	M	Femur	6	Curettage	25	Y	6
17	12	M	Tibia	4	Curettage	30	N
18	12	M	Fibula	4	Curettage	N/A	N/A
19†	13	F	Tibia	4	Curettage	2	N
20	13	M	Femur	4	Curettage	18	N
21	13	M	Femur	7	Curettage	70	N
22	13	F	Fibula	3	Curettage	18	N
23	13	F	Phalanx	1	Curettage	30	N
24	14	M	Tibia	N/A	N/A	N/A	N/A
25	14	F	Clavicle	2	Curettage	21	Y	21
26	14	M	Fibula	4	Curettage	8	N
27	14	F	Tibia	2	Curettage	51	Y	12
28	14	F	Radius	1	Curettage	24	Y	7
29†	15	F	Pubis	4	Curettage	28	Y	6
30	15	F	Fibula	5	Curettage	49	Y	6
31	15	F	Vertebra	4	Excision	60	N
32	15	F	Tibia	N/A	N/A	N/A	N/A
33	16	F	Vertebra	6	Excision	12	N
34	16	F	Tibia	2	Curettage	6	N
35	17	M	Vertebra	5	Excision	12	Y	10
36	17	F	Mandible	4	Curettage	22	N
37	17	F	Tibia	5	Curettage	46	Y	5
38	20	F	Tibia	4	Curettage	7	N
39	26	F	Phalanx	4	Excision	33	N
40	27	M	Humerus	3	Curettage	5	N
41	27	F	Clavicle	2	Curettage	6	Y	6
42	29	F	Calcaneous	N/A	Curettage	44	Y	35
43	32	M	Talus	3	Curettage	12	N
44	42	M	Femur	3	Curettage	12	N
45	6	M	Humeruss	5	Curettage	31	N
46	7	F	Ulnas	2	Curettage	N/A	N/A
47	8	M	Clavicles	2	Curettage	78	Y	5
48	9	F	Vertebras	3	Excision	18	N
49	9	M	Calcaneouss	4	Curettage	18	Y	6
50	15	F	Fibulas	4	Curettage	4	N
51	18	M	Fibulas	3	Curettage	1	N
52	8	M	Shoulderst	8	Excision	N/A	N/A

^*, s, denotes solid variant; st, denotes soft tissue tumor; N/A, not available.

^†, previously reported cases.16