CyberKnife Treatment for Kaposiform Hemangioendothelioma of the Ilium in an Adult: Case Report and Review of the Literature

Background: Kaposiform hemangioendothelioma (KHE) is a rare vascular neoplasm that mainly affects infants. KHE rarely develops in adolescents and adults. These tumors tend to be locally invasive, but are not known to produce distant metastases. Numerous treatment modalities are available for KHE, but the optimal therapy is unknown. Case Report: A 51-year-old woman was diagnosed with KHE of the ilium in September 2005. The lesion recurred within 5 years of local excision, and was subsequently treated with CyberKnife. Within 1 month of CyberKnife therapy, pain intensity was significantly reduced and the patient's quality of life was significantly improved. Since January 2011, she has remained pain-free and has had no signs of recurrence or metastasis for more than 2 years following CyberKnife therapy. Conclusion: We report the first CyberKnife treatment of an adult with KHE of the bone without accompanying cutaneous changes and Kasabach-Merritt syndrome. CyberKnife treatment could be a useful temporizing measure for bone KHE.

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