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  Temps Restant


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Las CT divide los enficemas en

Centriacinar emphysema occurs preferentially in the upper lobes and produces holes in the center of secondary pulmonary lobules. The walls of emphysematous spaces are usually imperceptible, but central vessels may be visible (image 4). In contrast, the walls of cysts in pulmonary Langerhans histiocytosis, another cystic lung disease of cigarette smokers, are thicker Panacinar emphysema more commonly involves the lung bases and involves the entire secondary pulmonary lobule (image 6). Panacinar emphysema can cause a generalized paucity of vascular structures. Among patients with alpha-1 antitrypsin deficiency, panacinar emphysema is the more common pattern. Paraseptal (distal acinar) emphysema produces small, subpleural collections of gas located in the periphery of the secondary pulmonary lobule





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