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Histopathology and Cytology of
Poultry Diseases By Ivan Dinev, DVM, PhD
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CARTILAGINOUS LUNG NODULES IN BROILER CHICKENS
Fig. 1. Cartilaginous or osteocartilaginous lung nodules are most commonly encountered in broiler chickens after the age of 3 weeks. They are divided into hyaline cartilaginous, mineralized cartilaginous and osseous. Their localization is in the parenchyma of pulmonary lobules at a distance from large air ducts or blood vessels. The causes are unknown. The condition is largely prevalent in chickens having survived an ascites episode. H/E, Bar = 30 µm.
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