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This describes the supernumerary pulmonary lobes and the accompanying roentgenographic changes in health and disease. Accepting Aeby's definition, the authors hold that a lobe is that part of the lung extending to the pleura and depending on one or more primary bronchi and separated from other lobes by a pulmonary fissure. The azygos lobe is therefore not a true lobe like the cardiac and posterior middle lobes. The history of the development of knowledge of the azygos lobe, from its first description by Wrisberg in 1778, is fully given as well as its embryologic development, dependent on a higher entrance than normally of the azygos vein into the vena cava, which forces the pulmonary buds to grow around instead of pushing the vein to one side. The vein then comes to lie at the bottom of a fissure with the surfaces separated by two layers of visceral and two of
La tuberculose du lobe azygos. JAMA. 1933;101(16):1261–1262. doi:10.1001/jama.1933.02740410063037
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