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Congress: ECR25
Poster Number: C-16473
Type: Poster: EPOS Radiologist (educational)
Authorblock: A. K. Ramirez Fuentes, M. Loya Ceballos; Ciudad de México/MX
Disclosures:
Ana Karen Ramirez Fuentes: Nothing to disclose
Monica Loya Ceballos: Nothing to disclose
Keywords: Lung, Pulmonary vessels, Vascular, CT, CT-Angiography, Contrast agent-intravenous, Congenital
Learning objectives Pulmonary sequestration is a rare condition, accounting less than 10% of all congenital pulmonary malformations, and it is the second most common congenital lung malformation. This review aims to evaluate the imaging findings and potential pitfalls of computed tomography (CT) in the diagnosis and characterization of intralobar and extralobar pulmonary sequestration. Among the different imaging modalities, CT angiography offers a complete visualization of both lung parenchyma and vascular structures. Other imaging methods, such as X-ray, ultrasound (US), and magnetic resonance imaging...
Read more Background Pulmonary sequestration is a congenital anomaly characterized by the formation of aberrant, non-functioning lung tissue. It is classified into two types: intralobar and extralobar, each with distinct clinical and radiological features. Although it is more frequently diagnosed in neonates and young children, its diagnosis in adults is rare and is often associated with a history of recurrent pulmonary infections.  Intralobar type (ILS): accounting for 75% of cases, its main characteristic is that it shares the same visceral pleural lining as the...
Read more Findings and procedure details Findings typically include the presence of a well-defined mass with predominant localization in the lower lobes in 98% of cases. Among the lower lobes, the medial or posterior segment of the left lower lobe is the most common. [fig 3] The pathognomonic feature is the demonstration of an aberrant vascular supply originating from the aorta in the majority of cases; however, it can also be supplied by other systemic or pulmonary arteries. [fig 4] [fig 5] Depending on the type of sequestration, different key findings can...
Read more Conclusion CT evaluation of pulmonary sequestration is essential for diagnosis, as it provides detailed anatomical information regarding localization, type, and vascular anatomy, delineating the arterial supply and venous drainage. This information is crucial for planning treatment strategies.
Read more References Michela, Gabelloni, ‘Pulmonary sequestration: What the radiologist should know, Clinical Imaging, 73 (2021), 61 – 72 <https://doi.org/10.1016/j.clinimag.2020.11.040>. Syahriar, Muhammad ‘Radiology aspect of intra-lobar pulmonary sequestration, lung cancer-associated, and hybrid lesions: A case report, Annals of Medicine and Surgery, 74 (2022) < https://doi.org/10.1016/j.amsu.2022.103268>. Akshay, Kumar and others ‘Transarterial Embolization of Pulmonary Sequestration, ,RadioGraphics, 43 (2023) < https://doi.org/10.1148/rg.220204>. Jang-Hoon, Lee ‘Intradiaphragmatic extralobar pulmonary sequestration in adult, J Cardiothorac Surg 9, 112 (2014) <https://doi.org/10.1186/1749-8090-9-112>. Alsumrain M, Ryu JH ‘Pulmonary sequestration in adults: a retrospective review of resected and...
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