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Congress: ECR26
Poster Number: C-20653
Type: Poster: EPOS Radiologist (educational)
Authorblock: F. J. Azpeitia Arman, R. M. Lorente Ramos, J. Azpeitia Hernandez, M. Juan Porter, L. M. Caballero Ubaque, A. F. Arias, J. A. Hernandez Zamora; Madrid/ES
Disclosures:
Francisco Javier Azpeitia Arman: Nothing to disclose
Rosa Maria Lorente Ramos: Nothing to disclose
Javier Azpeitia Hernandez: Nothing to disclose
Maria Juan Porter: Nothing to disclose
Lina María Caballero Ubaque: Nothing to disclose
Anahi Fabiola Arias: Nothing to disclose
Jesus Alberto Hernandez Zamora: Nothing to disclose
Keywords: Urinary Tract / Bladder, CT, Fluoroscopy, Diagnostic procedure, Pyelography, Pathology
Learning objectives To review the embryology and anatomy of the ureter. To illustrate imaging findings of the ureter, including normal variants, inflammatory/infectious diseases, and tumors. To analyse the correlation between intravenous urography, US, CT, and MRI features with pathology in ureteral lesions. To emphasize pitfalls, diagnostic difficulties, and differential diagnosis.
Read more Background Although ureterolithiasis is the most frequent and urothelial carcinoma the most important differential diagnosis for ureteral lesions, different entities may involve the ureter. We review imaging findings, with clues to interpretation, and provide pathologic correlation. We will highlight how pathologic correlation informs imaging interpretation. [fig 1]
Read more Findings and procedure details 1.- Embryology of the UreterThe ureter arises from the ureteric bud, an outgrowth of the mesonephric (Wolffian) duct that appears around the fourth week of gestation. [fig 2] Abnormal development of the ureteric bud causes congenital ureteral anomalies, such as ureteral duplication, ectopic insertion, ureterocele, megaureter, and junctional obstructions. These issues arise from disrupted interaction with the metanephric blastema. [fig 3] 2. Anatomy of the UreterThe ureters are paired muscular tubes, 3–4 mm in diameter, that transport urine from the kidneys to the bladder.They begin at...
Read more Conclusion Various benign and malignant conditions can affect the ureter, with CT urography being the gold standard for evaluation. It assesses the lumen, wall, and surrounding tissues. Filling defects may indicate stones, tumors, or inflammation. Ureteral wall thickening suggests infection or neoplasm, and secondary signs like hydronephrosis suggest obstruction. Postoperative imaging requires knowledge of surgical techniques.
Read more Personal information Francisco Javier Azpeitia Arman 1,3(presenter) Rosa Maria Lorente Ramos 1 Javier Azpeitia Hernandez 2 María Juan Porter 1 Lina M Caballero Ubaque 1 Fabiola Arias 1 Jesus A Hernandez Zamora 1 1.Radiology Department. Unidad Central de Radiodiagnóstico de la CAM. Hospital Universitario Infanta Leonor.2.Radiology Department. Hospital Central de la Defensa. Madrid3. Department of Radiology and Rehabilitation, Complutense University of Madrid
Read more References Rouprêt, M., Babjuk, M., Burger, M., Capoun, O., Cohen, D., Compérat, E. M., Shariat, S. F. (2021). European Association of Urology Guidelines on Upper Urinary Tract Urothelial Carcinoma: 2020 Update. European Urology, 79(1), 62–79. doi:10.1016/j.eururo.2020.05.042 Yaxley JP. Urinary tract cancers: An overview for general practice. J Family Med Prim Care. 2016 Jul-Sep;5(3):533-538. doi: 10.4103/2249-4863.197258. PMID: 28217578 Tsikitas LA, Hopstone MD, Raman A, Duddalwar V. Imaging in Upper Tract Urothelial Carcinoma: A Review. Cancers. 2023; 15(20):5040. https://doi.org/10.3390/cancers15205040 Raman SP, Fishman EK. Upper and Lower...
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