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Congress: ECR26
Poster Number: C-10070
Type: Poster: EPOS Radiologist (educational)
Authorblock: M. Gorjón Gómez, C. Jiménez Relimpio, E. C. Lorente, B. Alonso Márquez, E. Mira Figueroa Sánchez, M. Morena López, S. R. Vallejo Rivera, P. Beneitez Mascaraque, L. Nicolás Liza; Guadalajara/ES
Disclosures:
Marta Gorjón Gómez: Nothing to disclose
Cecilio Jiménez Relimpio: Nothing to disclose
Eduardo Casado Lorente: Nothing to disclose
Berta Alonso Márquez: Nothing to disclose
Eduardo Mira Figueroa Sánchez: Nothing to disclose
María Morena López: Nothing to disclose
Sonia Rebeca Vallejo Rivera: Nothing to disclose
Patricia Beneitez Mascaraque: Nothing to disclose
Lidia Nicolás Liza: Nothing to disclose
Keywords: Abdomen, Gastrointestinal tract, Retroperitoneum, CT, MR, Ultrasound, Biopsy, Diagnostic procedure, Inflammation, Tissue characterisation
Learning objectives To illustrate the most frequent and less common radiological manifestations and complications. To support accurate radiological diagnosis, lowering morbimortality and facilitating proper treatment. To review its main mimics and their imaging features.
Read more Background Retroperitoneal fibrosis (RPF) is a rare fibroinflammatory condition, causing fibrotic tissue deposit around the aorta, with potential extension to the retroperitoneum and surrounding structures.Most frequently diagnosed in males (M:F 3:1) between 40-60 years old. RPF can be idiopathic or due to secondary causes [1-3]. [fig 1] Idiopathic retroperitoneal fibrosis is thought to be a multifactorial, immune-mediated disorder, most likely representing a manifestation of systemic autoimmune disease originating as primary aortitis. A cytokine-driven inflammatory cascade involving CD4+ T cells, IL-6, Th2 cytokines and TGF-β...
Read more Findings and procedure details IMAGINGPLAIN X-RAYConventional radiographs have no imaging role in the diagnosis of RPF [7].ABDOMINAL X-RAYInespecific. In advanced stages, a central mass of soft tissue at the level of the psoas line is sometimes seen. [fig 5] ULTRASONOGRAPHY (US)Useful as screening, but with low sensitivity.RPF is visualized as a hypo or anechoic, irregular demarcated retroperitoneal mass, anterior to the lower lumbar spine or the promontory of the sacrum. [fig 6] If ureteral entrapment is present, ureterohydronephrosis may occur in varying degrees.MULTIDETECTOR COMPUTED TOMOGRAPHY (MDCT)Useful to assess other...
Read more Conclusion RPF is a rare disease with non-specific symptoms resulting on a delayed diagnosis. Recognition of RPF most important imaging features prompts early diagnostic and timely initiation of medical treatment.Multidisciplinary approaches, supported by radiologists’ expertise, are essential for improving patient outcomes and guiding appropriate management.
Read more References Cronin, C. G., Lohan, D. G., Blake, M. A., Roche, C., McCarthy, P., & Murphy, J. M. (2008). Retroperitoneal fibrosis: A review of clinical features and imaging findings. American Journal of Roentgenology, 191(2), 423–431. https://doi.org/10.2214/ajr.07.3629  Rossi, G. M., Rocco, R., Accorsi Buttini, E., Marvisi, C., & Vaglio, A. (2017). Idiopathic retroperitoneal fibrosis and its overlap with igg4-related disease. Internal and Emergency Medicine, 12(3), 287–299. https://doi.org/10.1007/s11739-016-1599-z Czerniak, S., & Mathur, M. (2025). Multimodality Imaging Review of retroperitoneal fibrosis. Abdominal Radiology, 50(9), 4450–4468. https://doi.org/10.1007/s00261-025-04847-6 Runowska,...
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