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Congress: ECR25
Poster Number: C-10991
Type: Poster: EPOS Radiologist (educational)
Authorblock: L. G. Savarese1, N. Papalexis2, M. A. Hernandes1, M. Miceli2, M. Carta2, G. Facchini2; 1Ribeirao Preto/BR, 2Bologna/IT
Disclosures:
Leonor Garbin Savarese: Nothing to disclose
Nicolas Papalexis: Nothing to disclose
Mateus A. Hernandes: Nothing to disclose
Marco Miceli: Nothing to disclose
Michela Carta: Nothing to disclose
Giancarlo Facchini: Nothing to disclose
Keywords: Interventional non-vascular, Musculoskeletal soft tissue, Musculoskeletal system, MR, Ablation procedures, Biological effects, Image verification
Learning objectives This presentation will examine the imaging characteristics of desmoid tumors (DTs) treated with percutaneous cryoablation, covering pre-treatment MRI scans, intra-procedure images, and MRI follow-up studies. Due to the limited data available on this subject, this exhibit seeks to fill this knowledge gap, improving our ability to interpret imaging results for DTs treated with cryoablation and optimizing the management of this unique lesion.
Read more Background Desmoid tumors (DTs) are uncommon tumors that originate from musculoaponeurotic structures. Although benign, they can cause pain and disability due to their tendency to be locally aggressive [1, 2]. DTs represent less than 3% of soft tissue tumors, with an estimated incidence of 3 to 5 cases per million. They typically affect individuals aged 30 to 40 years, with a higher prevalence in women. Most cases of DTs occur sporadically and are found extra-abdominally, primarily in the extremities or trunk...
Read more Findings and procedure details Role of MR imaging MRI also plays a major role in diagnosis and follow-up. Changes in signal intensity and enhancement patterns reflect tumor biology and treatment response. The histopathologic characteristics of DTs correlate with MRI findings: hyperintense and enhancing areas indicate regions of high cellularity and proliferation, while hypointense and non-enhancing regions represent areas with low cellularity, primarily composed of collagen and fibrous tissue [12, 13]. An increase in collagenization within the tumor is associated with a decrease in cellularity, suggesting...
Read more Conclusion Our understanding of DTs is continuously evolving, with advancements in imaging techniques enhancing our ability to interpret MR imaging patterns of DTs treated with cryoablation, thereby helping to avoid misinterpretation of post-treatment changes as tumor recurrence and optimizing the management of this unique lesion.
Read more References Sbaraglia M, Bellan E, Dei Tos AP. The 2020 WHO classification of soft tissue tumours: news and perspectives. Pathologica. 2021;113(2):70-84. World Health Organization Classification of Tumours Editorial Board. WHO Classification of Tumours: Soft Tissue and Bone Tumours. Soft Tissue and Bone Tumours. Vol 3. IARC Press; 2020. Kasper B, Baumgarten C, Garcia J, et al.; Desmoid Working Group. An update on the management of sporadic desmoid-type fibromatosis: a European Consensus Initiative between Sarcoma PAtients EuroNet (SPAEN) and European Organization for Research and...
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