Archive image from page 363 of The pathology and differential diagnosis The pathology and differential diagnosis of infectious diseases of animals differentpathology00moorrich Year: 1908 340 PNEUMONOMYCOSIS mycelium. All sections showed a small amount of anthracosis. The appearance of sections varied in different nodules as they were taken further and further away from the center. In general the fungus was thickest at the center, so thick in many instances that the lung tissue was hidden entirely, and grew less as we went outward. The tissue changes noted took place in a zone beyond the grea
Archive image from page 363 of The pathology and differential diagnosis The pathology and differential diagnosis of infectious diseases of animals differentpathology00moorrich Year: 1908 340 PNEUMONOMYCOSIS mycelium. All sections showed a small amount of anthracosis. The appearance of sections varied in different nodules as they were taken further and further away from the center. In general the fungus was thickest at the center, so thick in many instances that the lung tissue was hidden entirely, and grew less as we went outward. The tissue changes noted took place in a zone beyond the greatest growth of the fungus. In other nodules the fungus was evenly distributed throughout, following the alveolar walls. In these the tissue changes were slight. At times the fungus grew in dense, brush-like clusters, closely resembling actinomycosis under low amplification. This form was '' considered to show a marked reaction and resistance on the part of the animal and a lowered vital- L' im''V '_jS When found it indi- fVM' ' ''''G - cated that the asper- mvHj'' «n gliosis was a pri- i)k*hl y §a rnary and not a sec- itt;«.-li«. -tl :2i ondary or terminal affection. No giant cells were found in any section. Fruit formation was not observed in the substance of the tissues at any time. It was observed most frequently in bronchi, which were for the most part denuded of their epithelium, and next in emphysematous cavities, where it could be detected in clusters by the naked eye. Fruit was found in sections, in spaces the nature of which it was impossible to determine accurately. Whenever the formation of fruit was seen, there were innumerable free spores as well Fig 88. Necrosis in the kidney of a rabbit due to A. funiigatus ; A., fmigus ; B and C, nuclei; D, tiecrotic tissue ; E, normal cells.
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