Clivus Hemangioma in a Pediatric Patient: Case Report.

Background: Hemangiomas are benign blood vessels tumors that represent less than 1% of all the bone neoplasms. Calvarial hemangiomas are mainly solitary lesions commonly located in the frontal and parietal bone; however, they may occur in any skull region. These tumors increase in size over a period of months to years before they start showing their first symptoms such as headache, bone deformity, and pathological fractures. Differential diagnosis with osteosarcoma should be considered. Surgical resection with a safety margin is a standard treatment of the cranial hemangioma. Furthermore, radiotherapy has proven to stop the tumor's growth but not its size.

Case Description: We treated an 11-year-old male who had a rare case of a capillary hemangioma located in the clivus bone. The patient underwent 2 endoscopic endonasal resection because of tumor recurrence. Surgical safety margins are highly recommended, but this procedure could not be performed because of the tumor's location. After the second relapse, the oncology team decided to initiate radiotherapy. At 6-month follow-up, the tumor reduced its size and remained unchanged.

Conclusions: Surgical safety margins are highly important to prevent recurrence in this type of bone tumors. Skull base hemangiomas are a big challenge when you want to achieve these safety margins. We believe that a combined treatment of surgery and radiotherapy should be considered as the main treatment.