Table 3.
Diagnosis and diagnostic work-up of children with a primary malignant bone tumor
| Variable | Frequency | Percent (%) |
|---|---|---|
| WBC (*109/L) (median + IQR) | 10 | 10 ± 9.3 |
| Neutrophil (%) | 60.4 | 60.4 ± 74.3 |
| Platelets (*109/L) (median + IQR) | 410 | 410 ± 216 |
| Radiologic investigation(n = 95) | ||
| bone MRI | 51 | 53.7 |
| bone x-ray | 38 | 40 |
| bone CT-scan | 33 | 34.7 |
| Metastatic workup | ||
| Yes | 93 | 97.9 |
| No | 2 | 2.1 |
| Types of metastatic workup(n = 93) | ||
| Chest CT scan | 79 | 83.2 |
| Finding of metastasis | 32 | 40.5 |
| Chest X-ray | 56 | 58.9 |
| The finding of metastasis in X-ray | 10 | 17.9 |
| Abdominal Ultrasound | 44 | 46.3 |
| Finding of metastasis | 3 | 6.8 |
| Abdominal CT-scan | 24 | 25.3 |
| Finding metastasis | 7 | 29.2 |
| Bone marrow biopsy | 23 | 71.8 |
| Finding of metastasis | 5 | 21.7 |
| Localized Disease at Diagnosis | 54 | 58.1 |
| Metastatic Disease at Diagnosis | 39 | 41.9 |
| Osteosarcoma localized | 37 | 58.7 |
| Metastasis | 24 | 38.1 |
| Ewing sarcoma localized | 17 | 53.1 |
| Metastasis | 15 | 46.9 |
U/S Ultrasound, SD Standard deviation, IQR Interquartile range, WBC White blood cell count