Azygos lobe on chest X-ray. Arrowheads show the delineation of the lobe. Arrow points to the azygos vein.
In human anatomy, an azygos lobe is a normal anatomical variation of the upper lobe of the right lung.[1] It is seen in 0.3% of the population.[2] Embryologically, it arises from an anomalous lateral course of the azygos vein,[3] in a pleural septum within the apical segment of the right upper lobe or in other words an azygos lobe is formed when the right posterior cardinal vein, one of the precursors of the azygos vein, fails to migrate over the apex of the lung and penetrates it instead, carrying along two pleural layers as the azygous fissure, that invaginates into the upper portion of the right upper lobe.[1]
In human anatomy, an azygoslobe is a normal anatomical variation of the upper lobe of the right lung. It is seen in 0.3% of the population. Embryologically...
pleural septum separating an azygoslobe from the upper lobe of the right lung. The origin and anatomical course of the azygos vein are quite variable. Usually...
respiratory distress syndrome caused by a deficiency in lung surfactant. An azygoslobe is a congenital anatomical variation which though usually without effect...
behind the superior vena cava and part of the right atrium, and below the azygos vein. That of the left lung passes beneath the aortic arch and in front...
bronchi), which deliver oxygen to the three lobes of the right lung—the superior, middle and inferior lobe. The azygos vein arches over it from behind; and the...
aorta, the first part of the subclavian artery, the superior vena cava/azygos vein, the esophagus and (very rarely) an enlarged thymus. Its anterosuperior...
trachea, with the isthmus overlying the second to fourth rings, and the lobes stretching to the level of the fifth or sixth cartilage. The blood vessels...
the esophagus. The upper and middle parts of the esophagus drain into the azygos and hemiazygos veins, and blood from the lower part drains into the left...
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