**2.2 Ewing's sarcoma**

Ewing's sarcoma is primarily a disease of adolescence, with a peak incidence of about three cases per million in the 1519 year age group. Although rare, Ewing's sarcoma is the second most common bone sarcoma affecting children and adolescents. It is more frequent in men; mainly affects Caucasians; and frequently occurs in the spine, pelvis, arm, or leg [7, 8].

**Figure 1.** *Soft tissue removal.*

**Figure 2.** *Bone drilling.*

**Figure 3.** *Sterilization with liquid nitrogen.*

*Anesthesia Management to Improve Outcomes DOI: http://dx.doi.org/10.5772/intechopen.106672*

**Figure 4.** *Bone Reimplantation.*

### **2.3 Chondrosarcoma**

Chondrosarcoma is the most common bone sarcoma in adults. It mainly affects patients older than 50 years. The incidence is 8 per million inhabitants. Chondrosarcomas most commonly arise from the pelvis, upper femur, and shoulder girdle. The prognosis of chondrosarcoma varies depending on the primary location and the extent of spread [7, 8].
