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Congress: ECR25
Poster Number: C-17351
Type: Poster: EPOS Radiologist (educational)
DOI: 10.26044/ecr2025/C-17351
Authorblock: N. Pyrrou, A. Chatzintounas, L. Kougias, X. G. Mavropoulou, A. A. Hatzidakis, P. K. Prassopoulos; Thessaloniki/GR
Disclosures:
Nikoletta Pyrrou: Nothing to disclose
Antonios Chatzintounas: Nothing to disclose
Leonidas Kougias: Nothing to disclose
Xanthippi George Mavropoulou: Nothing to disclose
Adam A. Hatzidakis: Nothing to disclose
Panos K. Prassopoulos: Nothing to disclose
Keywords: Abdomen, Interventional vascular, Vascular, CT, CT-Angiography, Fluoroscopy, Catheters, Contrast agent-intravenous, Embolisation, Aneurysms, Haemorrhage, Trauma
Learning objectives To elucidate the significance of diagnosing abdominal pseudoaneurysms and their most common etiologies.To identify key radiological features differentiating them from other vascular lesions.To delineate our clinical experience in managing abdominal pseudoaneurysms, emphasizing the role of interventional radiology.
Read more Background Pseudoaneurysms are localized vascular lesions characterized by disruption of the vessel wall and contained extravasation[1]. Unlike true aneurysms, they are not delineated by three intact layers of the vessel wall but are instead defined by only the outermost layer, typically featuring a distinct narrow neck connecting them to the parent vessel. Their morphology varies significantly, from simple saccular forms to complex multiloculated structures[2].These complex vascular abnormalities can result from diverse etiologies, including inflammatory processes, traumatic injuries, iatrogenic interventions, or spontaneous...
Read more Findings and procedure details While Doppler ultrasound is particularly useful for peripheral pseudoaneurysms, effectively delineating lesion characteristics and imaging findings such as the to-and-fro waveforms and the pathognomonic yin-yang sign, its role is limited for assessing abdominal lesions due to bowel gas interference and body habitus[1,2].Multiphasic computed tomography angiography (CTA) is the preferred diagnostic modality offering superior visualization of pseudoaneurysms and differentiation from other vascular lesions like true aneurysms, active extravasation or AVFs. The ability to perform multiplanar reconstructions and 3D volume rendering enhances...
Read more Conclusion Abdominal pseudoaneurysms represent high-risk vascular lesions that require prompt, accurate diagnosis and intervention. Additionally, the accurate differentiation of pseudoaneurysms from other vascular pathologies is crucial and requires cautious review of imaging findings. A multidisciplinary approach, with radiologists at the forefront serving as key clinical leaders, is essential. Interventional radiologists play a pivotal role throughout the care pathway - from initial diagnostic interpretation to definitive endovascular treatment. Their expertise is essential for the precise characterization of pseudoaneurysms and strategic planning of...
Read more References Shuaib W, Tiwana MH, Vijayasarathi A, Sadiq MF, Anderson S, Amin N, Khosa F. Imaging of vascular pseudoaneurysms in the thorax and abdomen. Clin Imaging. 2015 May-Jun;39(3):352-62. doi: 10.1016/j.clinimag.2015.01.013. Epub 2015 Jan 21. PMID: 25682302. Jesinger RA, Thoreson AA, Lamba R. Abdominal and pelvic aneurysms and pseudoaneurysms: imaging review with clinical, radiologic, and treatment correlation. Radiographics. 2013 May;33(3):E71-96. doi: 10.1148/rg.333115036. PMID: 23674782. Lu M, Weiss C, Fishman EK, Johnson PT, Verde F. Review of visceral aneurysms and pseudoaneurysms. J Comput Assist Tomogr....
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