Preoperative Stereotactic Body Radiotherapy to a Skull Renal Cell Metastasis: An Alternative to Preoperative Embolization?

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Abstract
Introduction: This is the first case study to report on using stereotactic body radiotherapy as an alternative and novel treatment modality for embolization to reduce the risk of operative bleeding for a metastatic renal cell tumor. Case presentation: A 58-year-old woman presented with an asymptomatic large 7-cm tumor on the parieto-occipital vertex of the skull. Given the location of this lesion along with its vascular histology, it was a challenge to provide safe and effective treatment using conventional management strategies. Conclusion: We report on a rare presentation of a metastatic renal cell cancer and the use of stereotactic body radiotherapy as an innovative radiation approach to deliver high-dose radiation safely to control this large aggressive and vascular metastasis. The success of this management strategy allowed for minimal intraoperative blood loss, and the patient continues with local control 1-year posttreatment.

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