Abstract #0553

Magnetic Resonance-Guided Focused Ultrasound Treatment of Extra-Abdominal Desmoid Tumors: A Retrospective Multicenter Study

Pejman Ghanouni¹, Andrew Dobrotwir², Alberto Bazzocchi³, Matthew Bucknor⁴, Rachelle Bitton¹, Jarrett Rosenberg¹, Kristen Telischak⁵, Maurizio Busacca³, Stefano Ferrari⁶, Ugo Albisinni³, Shannon Walters¹, Kristen Ganjoo⁷, Alessandro Napoli⁸, Kim Butts Pauly¹, and Raffi Avedian⁹

¹Radiology, Stanford University, Stanford, CA, United States, ²Radiology, The Royal Women's Hospital, Parkview, Australia, ³Diagnostic and Interventional Radiology, The Rizzoli Orthopaedic Institute, Bologna, Italy, ⁴Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, CA, United States, ⁵Anesthesiology, Perioperative and Pain Medicine, Stanford University, Stanford, CA, United States, ⁶Oncology, The Rizzoli Orthopaedic Institute, Bologna, Italy, ⁷Medicine, Stanford University, Stanford, CA, United States, ⁸Radiology, Sapienza University, Rome, Italy, ⁹Orthopaedic Surgery, Stanford University, Stanford, CA, United States

Desmoid tumors are benign, but can result in pain and dysfunction. Surgery, radiation and chemotherapy are only only partially effective and can cause significant morbidity. MR guided focused ultrasound (MRgFUS) was used to treat patients with desmoid tumors, sometimes in lieu of surgery, radiation or chemotherapy. This retrospective multicenter feasibility study of 15 patients demonstrates that MRgFUS is safe and that this technique may be used to control the growth of symptomatic desmoid tumors.

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