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Congress: ECR25
Poster Number: C-11365
Type: Poster: EPOS Radiologist (educational)
Authorblock: P. Del Nido Recio, A. Paternain Nuin, C. Urtasun Iriarte, M. B. Barrio Piqueras, M. Jiménez Vázquez, M. R. López De La Torre Carretero, C. Mbongo, D. A. Zambrano, J. D. Aquerreta; Pamplona/ES
Disclosures:
Pablo Del Nido Recio: Nothing to disclose
Alberto Paternain Nuin: Nothing to disclose
Cesar Urtasun Iriarte: Nothing to disclose
Miguel Barrio Barrio Piqueras: Nothing to disclose
Marcos Jiménez Vázquez: Nothing to disclose
Manuel Rafael López De La Torre Carretero: Nothing to disclose
Carmen Mbongo: Nothing to disclose
Daniel Alfonso Zambrano: Nothing to disclose
Jesús Dámaso Aquerreta: Nothing to disclose
Keywords: Musculoskeletal soft tissue, MR-Diffusion/Perfusion, Diagnostic procedure, Cancer
Learning objectives To review the updated classification of fibroblastic and myofibroblastic tumors. To analyze the main features of imaging of these lesions. To highlight some important tips when making a differential diagnosis between these neoplasms and other non-tumoral entities. Soft tissue tumors of fibrous origin are among the most common tumors found in clinical practice. Depending on the type, they may have different biological behavior and imaging appearance. Some of these lesions may be reactive to a primary process (elastofibroma dorsi and myositis ossificans).The quantity...
Read more Background MRI diagnostic algorithm for low signal intensity (SI) lesions on T1 WI and T2 WI. It is important to differentiate between fibroblastic tumors and other non-tumoral lesions (figure 1).Low SI on T1 WI and T2 WI: T2* Blooming Artifact (GRE):  Hemosiderin-containing lesions: Ancient hematoma Hemorrhagic tumor Tenosynovial tendon sheath tumor No T2* Blooming Artifact  (GRE) Fibrous lesions: Fibrosarcoma Desmoid Tumor Fibrous Component [fig 1]
Read more Findings and procedure details Fibroblastic and myofibroblastic tumors can be classified according to their biologic behavior (figure 2). [fig 2] Benign lesions: Elastofibroma dorsi (figure 3): it appears at the scapulo-thoracic joint and it may be heterogeneous on imaging (fibrous and fatty tissue). [fig 3] Myositis Ossificans (figure 4): it shows a heterogeneous appearance on imaging and has calcified areas. [fig 4] Fibromatosis Colli (figure 5): it is found on the sternocleidomastoid muscle and it is secondary to trauma during childbirth. [fig 5] Intermediate lesions (locally aggressive or rarely metastasizing) (figures 6-22): Palmar (Dyupuytren) and Plantar (Ledderhose)...
Read more Conclusion A wide range of presentation, from benign to malignant, can be encountered when facing fibroblastic and myofibroblastic tumors. These lesions are very frequent and radiologists should be familiar with their typical imaging and pathologic appearances. Accurate characterization of these tumors on imaging is crucial in guiding appropriate clinical intervention and follow-up.
Read more References [1] Paixao C, Lustig JP, Causeret S, Chaigneau L, Danner A, Aubry S. Tumors and pseudotumors of the soft tissues: Imaging semiology and strategy. J Clin Imaging Sci 2021;11. https://doi.org/10.25259/JCIS_135_2020. [2] Haseli S, Mansoori B, Christensen D, Abadi A, Pooyan A, Zadeh FS, et al. Fibroblastic and Myofibroblastic Soft-Tissue Tumors: Imaging Spectrum and Radiologic-Pathologic Correlation. Radiographics 2023;43. https://doi.org/10.1148/RG.230005/ASSET/IMAGES/LARGE/RG.230005.FIG14.JPEG. [3] Sargar KM, Sheybani EF, Shenoy A, Aranake-Chrisinger J, Khanna G. Pediatric fibroblastic and myofibroblastic tumors: A pictorial review. Radiographics 2016;36:1195–214. https://doi.org/10.1148/RG.2016150191/ASSET/IMAGES/LARGE/RG.2016150191.FIG18B.JPEG. [4] Otero S,...
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