The mediastinum is a space in the thorax that contains a group of organs, vessels, nerves, lymphatics and their surrounding connective tissue. It lies in the midline of the chest between the pleura of each lung and extends from the sternum to the vertebral column. Division of the mediastinum is generally conceptualized as comprising 3 or 4 compartments, depending on the schema. For example, the mediastinum can be divided into parts based on their relationship to the fibrous pericardium :.
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We'd like to understand how you use our websites in order to improve them. Register your interest. The mediastinal lines visible at conventional radiography represent the interfaces between the mediastinum and adjacent lung parenchyma. Preservation, obliteration, thickening and distortion of these lines represent the key to detecting and localising mediastinal abnormalities on chest radiographs.
The learning objectives of this review are to: illustrate radiographic anatomy of the mediastinum with particular attention to mediastinal lines; describe radiographic signs that allow identification of mediastinal abnormalities that are difficult to detect on conventional chest radiographs; describe findings that help localise abnormalities in the anterior, middle or posterior mediastinum. The anterior junction line obliteration, the hilum overlay sign, the preservation of the posterior mediastinal lines and the silhouette sign with the right cardiac border are radiographic signs that allow identification and localisation of anterior mediastinal lesions.
Widening of the right paratracheal stripe, distortion of the azygo-oesophageal recess and the convex border of the aortopulmonary window indicate the presence of a middle mediastinal abnormality. Thickening, distortion or disruption of paraortic and paraspinal lines and posterior junction line obliteration are caused by posterior mediastinal lesions. Knowledge of normal radiographic mediastinal anatomy and mediastinal lines is crucial to identifying subtle mediastinal abnormalities that can be easily missed on conventional radiography.
Moreover, this approach allows identification of the involved mediastinal compartment on chest radiographs, thereby directing the most appropriate further diagnostic workup. Le linee mediastiniche rappresentano le superfici di contatto tra il mediastino ed il parenchima polmonare adiacente. This is a preview of subscription content, log in to check access.
Rent this article via DeepDyve. Felson B The mediastinum. Semin Roentgenol — Heitzman ER The mediastinum: radiologic correlations with anatomy and pathology. Mosby, St Louis. Google Scholar. Saunders, Philadelphia. Radiographics — J Comput Assist Tomogr — Quint LE Imaging of anterior mediastinal masses. Radiol Med — Radiographics S—S Radiology — Cardinale L, Ardissone F, Cataldi A et al Bronchogenic cysts in the adult: diagnostic criteria derived from the correct use of standard radiography and computed tomography.
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Correspondence to B. Reprints and Permissions. Feragalli, B. Radiographic evaluation of mediastinal lines as a diagnostic approach to occult or subtle mediastinal abnormalities. Radiol med , — Download citation. Received : 28 November Accepted : 13 January Published : 07 March Issue Date : June Search SpringerLink Search. Abstract The mediastinal lines visible at conventional radiography represent the interfaces between the mediastinum and adjacent lung parenchyma. Riassunto Le linee mediastiniche rappresentano le superfici di contatto tra il mediastino ed il parenchima polmonare adiacente.
Immediate online access to all issues from Subscription will auto renew annually. Storto Authors B. Feragalli View author publications. You can also search for this author in PubMed Google Scholar. View author publications. Rights and permissions Reprints and Permissions. About this article Cite this article Feragalli, B.
The International Thymic Malignancy Interest Group ITMIG classification of mediastinal compartments was developed to reflect a division of the mediastinum based on cross-sectional imaging. It was in part an effort to consolidate prior discrepant classification systems in use by different medical specialties. A working group composed of approximately experts in thoracic surgery, medical oncology, diagnostic radiology, and pathology were tasked with forming a practical system for anatomic classification which unified the various systems. The ITMIG classification divides the mediastinum into three compartments: prevascular, visceral and paravertebral 1,2. Please Note: You can also scroll through stacks with your mouse wheel or the keyboard arrow keys.
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