Category Archives: Respiratory

Alveoli SEM

An alveolus (plural: alveoli, from Latin alveolus, “little cavity”) is an anatomical structure that has the form of a hollow cavity. Found in the lung parenchyma, the pulmonary alveoli are the terminal ends of the respiratory tree, which outcrop from either alveolar sacs or alveolar ducts, which are both sites of gas exchange with the blood as well. (from Wikipedia)

Image from post-mitotic tumblr (link). Image by David Gregory and Debbie Marshall

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Diaphragm. Abdomen

‘Traite complet de l’anatomie de l’homme, comprenant la medicine operatoire.’, by Jean Marc Bourgery, published in Paris by C.A. Delaunay, 1831-54.

Image from OpiumMeadow flickr (link)

‘Diaphragme. Plan Abdominal.’ (Diaphragm. Abdomen.) This plate shows the diaphragm and abdomen of an adult. Vertebrae, tendon, aponeurosis, psoas etc.

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Diaphragm

‘Traite complet de l’anatomie de l’homme, comprenant la medicine operatoire.’, by Jean Marc Bourgery, published in Paris by C.A. Delaunay, 1831-54.

Image from Opiummeadow flickr (link)

‘Diaphragme. Plan Lateral’. (Diaphragm. Side.) This plate shows the diaphragm of an adult. Side view. Sternum, lumbar vertebra, cartilage etc.

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Pulmonary Sequestration

Pulmonary sequestration is a congenital disorder characterized by anomalous lung tissue that lacks normal communication with the tracheobronchial tree, which increases the likelihood of infection.

Pulmonary Sequestration. Shailvi Gupta, M.D., and Sunghoon Kim, M.D. NEJM January 31, 2013 (image link)

Cinical case:

A 9-year-old boy with a history of a lung lesion suspected to be a pulmonary sequestration or a congenital cystic adenomatoid malformation presented to the emergency department with fever and chest pain. A chest radiograph (above) showed a large opacity in the right lung, abutting the minor fissure and displacing it downward. Computed tomography of the chest revealed a large heterogeneous mass with scattered areas of low attenuation, suggesting mucous impaction, and a single large systemic artery  providing vascular supply from the descending aorta. No air bronchograms were evident within the mass. A vein arising from the posterior portion of the mass drained into the right superior pulmonary vein. The patient underwent a right upper lobectomy. The patient recovered without complications and since the operation has had no further pulmonary problems.  (adapted from NEJM)

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