Alveolar septal changes in pulmonary edema: a subcellular study of lung clearance in the dog.

Left lobe lung biopsies were obtained in dogs allowed to breathe in atmospheres of coal or barium sulphate dust before ligature of the left pulmonary veins and at 15 min, 1, 5, 7, 15, and 30 days after ligature. All samples were prepared for transmission electron microscopy (TEM) and scanning electron microscopy (SEM); in addition, samples from the barium sulphate group were examined by electron diffraction analysis (EDA). Two main phagocytic cell types were identified. In addition lymphatic capillary-like structures were observed in the alveolar septum after ligature of the pulmonary veins.

The lymphatic vessels of the lung: morphological study.

The authors studied the anatomical structures of the pulmonary lymphatic vessels in the dog and in man using injection techniques and macro- and microangiographic and histological methods. The results show that injection in the basal lobes is easier than in the apical lobes. The dog, an animal with a thin pleura, has a very dense superficial lymphatic network, like man. The superficial and the deep lymphatic vessels are connected through the pleural septa.

[Right ventricular malformation. Rare malformation of the heart]. / Hypoplasie ventriculaire droite. Malformation rare du coeur.

The AA describe a hypoplastic right ventricular chamber of the heart obtained by autopsy and belonging to a man who died of traumatic lesions and paraplegia. This malformation is very rare and the authors attribute to it the small size of the patient who was below the average Portuguese male height.