Table 1.
Pathologic diagnoses and blood loss volumes of 173 patients with sacral tumors
| Pathologic diagnosis | Number of patients | Blood loss volume (mL) | |||
|---|---|---|---|---|---|
| Minimum | Maximum | Mean | Standard deviation | ||
| Benign tumor | 69 | 250 | 8020 | 2826.59 | 1880.61 |
| Neurofibroma/schwannoma | 20 | 700 | 7700 | 3094.50 | 1793.45 |
| Teratoma | 6 | 290 | 1750 | 898.33 | 618.40 |
| Aneurysmal bone cyst | 1 | — | — | 350 | — |
| Giant cell tumor | 27 | 350 | 8020 | 3741.85 | 1809.49 |
| Other benign tumor | 15 | 250 | 4200 | 1758.33 | 1274.10 |
| Low-grade malignant tumor | 31 | 500 | 6000 | 2597.42 | 1443.30 |
| Chordoma | 31 | 500 | 6000 | 2597.42 | 1443.30 |
| High-grade malignant tumor | 26 | 700 | 9900 | 3533.46 | 2198.86 |
| Neurofibrosarcoma | 7 | 2350 | 9900 | 4874.29 | 3103.67 |
| Chondrosarcoma | 6 | 1150 | 7170 | 3486.67 | 2087.84 |
| Osteosarcoma | 4 | 700 | 4720 | 2942.50 | 2006.46 |
| Ewing’s sarcoma | 4 | 1400 | 4310.00 | 2452.50 | 1278.29 |
| Liposarcoma | 3 | 3400 | 4250.00 | 3733.33 | 453.67 |
| Malignant fibrous histiocytoma | 2 | 1500.00 | 2550.00 | 2025.00 | 742.46 |
| Metastatic tumor | 47 | 500 | 8700 | 2939.68 | 1793.44 |
| Renal carcinoma | 5 | 1350.00 | 6620.00 | 4208.00 | 2338.88 |
| Multiple myeloma | 4 | 1150.00 | 4730.00 | 3270.00 | 1679.66 |
| Hepatocarcinoma | 1 | — | — | 2600 | — |
| Thyroid carcinoma | 1 | — | — | 3260 | — |
| Other metastatic tumors | 36 | 500 | 8700 | 2727.36 | 1750.84 |