Right paratracheal stripe
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The right paratracheal stripe is a normal finding on the frontal chest x-ray and represents the right tracheal wall, adjacent pleural surfaces and any mediastinal fat between them. It is visible because of thesilhouette sign sign created by air within the trachea medially and air within the lung laterally.
It normally measures less than 4 mm 1-2 and thickening is non-specific but may represent 3:
- lipoma
- paratracheal lymphadenopathy
- thyroid malignancy
- parathyroid malignancy
- tracheal malignancy
- pleural effusion
Radiological appearance
Plain filmRadiograph
- seen in ~90% (range 83-97%) of normal PA chest x-rays 2-3
- appears as a stripe that extends from the level of the clavicles to the right tracheobronchial angle at the level of the azygous arch
- is usually in continuity with theright-sided great vessels superiorly andazygos vein inferiorly
-<p>The <strong>right paratracheal stripe</strong> is a normal finding on the frontal <a href="/articles/chest-radiograph">chest x-ray</a> and represents the right tracheal wall, adjacent pleural surfaces and any <a href="/articles/mediastinum">mediastinal</a> fat between them. It is visible because of the <a href="/articles/silhouette-sign">silhouette sign</a> created by air within the <a href="/articles/trachea">trachea</a> medially and air within the <a href="/articles/lung">lung</a> laterally.</p><p> It normally measures less than 4 mm <sup>1-2</sup> and thickening is non-specific but may represent <sup>3</sup>:</p><ul>-<li>lipoma</li>- +<p>The <strong>right paratracheal stripe</strong> is a normal finding on the frontal <a href="/articles/chest-radiograph">chest x-ray</a> and represents the right tracheal wall, adjacent pleural surfaces and any <a href="/articles/mediastinum">mediastinal</a> fat between them. It is visible because of the <a href="/articles/silhouette-sign">silhouette sign</a> created by air within the <a href="/articles/trachea">trachea</a> medially and air within the <a href="/articles/lung">lung</a> laterally.</p><p> It normally measures less than 4 mm <sup>1-2</sup> and thickening is non-specific but may represent <sup>3</sup>:</p><ul>
- +<li><a title="Mediastinal lipoma with remnants of thymic gland" href="/articles/thymolipoma">lipoma</a></li>
-<li>thyroid malignancy</li>- +<li><a title="Thyroid malignancy" href="/articles/thyroid-malignancies">thyroid malignancy</a></li>
-</ul><h4>Radiological appearance</h4><h5>Plain film</h5><ul>- +</ul><h4>Radiological appearance</h4><h5>Radiograph</h5><ul>
-<li>appears as stripe that extends from the level of the <a href="/articles/clavicle">clavicles</a> to the right tracheobronchial angle at the level of the azygous arch</li>-<li>is usually in continuity with the <a href="/articles/right-sided-great-vessels">right-sided great vessels</a> superiorly and <a href="/articles/azygos-vein">azygos vein</a> inferiorly</li>- +<li>appears as a stripe that extends from the level of the <a href="/articles/clavicle">clavicles</a> to the right tracheobronchial angle at the level of the azygous arch</li>
- +<li>is usually in continuity with the <a href="/articles/right-sided-great-vessels">right-sided great vessels</a> superiorly and <a href="/articles/azygos-vein">azygos vein</a> inferiorly</li>
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