• Hemangiomas are benign lesions   characterized by vascular spaces
  lined with endothelial cells.

• Hemangiomas of the bone are rare.   They represent less than 1% of all   bony tumors.

• Approximately 50% of osseous   hemangiomas are found in the   vertebral bodies (thoracic especially)   and 20% in the calvarium. Lesions   are usually asymptomatic.

• Radiological appearance can be quite   striking and depends on the location   of the lesion. T1-weighted MRI scans   vary from low to high intensity   depending on the amount of adipose   tissue present. T2-weighted MRI
  scans demonstrate lesions with high   intensity due to the vascularity.