Table 1 The demographics data of 121 patients

Patients

121

 Male: Female

67: 54

Median age (yrs)

47 (range, 18–70)

Location of the tumor

 Sacrum

67 [55%]

 Pelvis

54 [45%]

Diagnosis

 Benign tumor

  Neurofibroma/schwannoma

11

  Fibrous dysplasia

3

  Hemangioma

3

 Malignant Tumor

 Metastatic carcinoma

19

  Chordoma

19

  Chondrosarcoma

16

  Giant cell tumor

14

  Osteosarcoma

14

  Ewing Sarcoma

4

  Malignant fibrous histiocytoma

2

  Fibrosarcoma

2

  Others

14

Operating Time (min)

225 (range, 100–600)

Occulusion Time (min)

90 (range, 10–140)

Blood Loss (ml)

1200 (range, 400–7900)

Intraoperative blood transfusions (U)

7.8 (range, 0–36.4)

Intraoperative urine volume (ml)

800 (range, 100–3600)