**1. Introduction**

Bone tumor represents a variable entity of neoplasms, mostly benign, about 35–40% [1], or malignant, in this case, can be primary, that osteosarcoma is the only malignant primary tumor producing bone [2], or secondary due to bone metastases, and about 5% of all cancers have bone metastases to the initial diagnosis [3], most commonly from breast and prostate cancers [4]. Bone corresponds to the third most common site of metastases, after lung and liver [5–7], and the spine is the most common site of bone metastasis in the skeleton [8].

Due to the rarity of these lesions and the wide variety of possible diagnoses, the existence of a multi-professional team with orthopedists, radiologists, radiotherapists, oncologists, and pathologist is necessary for both the correct diagnosis and the proper treatment of the patient [9].
