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ECR 2018 / C-0884
High intensity focused ultrasound treatment for relapsing extra-abdominal desmoid tumours
Congress: ECR 2018
Poster No.: C-0884
Type: Scientific Exhibit
Keywords: Interventional non-vascular, Musculoskeletal soft tissue, Oncology, MR, Ultrasound, Ablation procedures, Treatment effects, Multidisciplinary cancer care
Authors: A. Najafi, C. A. Binkert; Winterthur/CH


MR-HIFU is an effective, outpatient treatment for patients with desmoid tumors that has minimal side effects and that can be combined with other treatment modalities. Given that desmoids are non-malignant tumors, the main treatment approach should be local tumor control while minimizing side effects. Small lesions have a high probability of complete ablation (Fig. 2). In cases of incomplete ablation, MR-HIFU can be repeated until desired therapeutic effect is achieved. It is important to realize that symptom relief does not require total tumor ablation.


There is increased risk of skin burns when lesions are in proximity to bone or less than 10 mm away from skin (near-field). Although none of our patients experienced it, there is also an increasing risk of far-field burns with larger tumor volumes presumably because of the increased number of sonifications and off-target heating of surrounding structures [3]. 

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