Table 1 The demographic and clinical characteristics of rare cases of bone involvement (n = 64)
Publication decade | N (%) |
|---|---|
2000s | 17 (28.3) |
2010s | 43 (71.7) |
Region | Â |
 Asia | 30 (46.9) |
 Europe | 19 (29.7) |
 America | 12 (18.7) |
 Africa | 2 (3.1) |
 Oceania | 1 (1.6) |
Gender | Â |
 Male | 45 (70.3) |
 Female | 19 (29.7) |
Age (years) | Â |
 Less than 1 | 2 (3.2) |
 2–18 | 29 (45.2) |
 19–50 | 28 (43.8) |
 More than 50 | 5 (7.8) |
Category | Â |
 Unifocal | 44 (68.7) |
 Multifocal | 11 (17.2) |
 Multisystem | 9 (14.1) |
Site of bone involvement | Â |
 Skull | 27 (42.2) |
 Facial bonesa | 4 (6.2) |
 Spine | 6 (9.4) |
 Chest wallb | 15 (23.4) |
 Pelvis | 6 (9.4) |
 Long bones | 4 (6.2) |
 Short tubular bones | 2 (3.1) |
Mean age (years) | Mean ± SD (n) |
 Children (Age range in children) | 7.6 ± 4.3 (n = 31) |
 Adults (Age range in adults) | 36.4 ± 12 (n = 33) |