The histologic changes vary from bronchiolocentric fibrosis to
honeycomb lung. Asbestos bodies, which are the hallmark of
exposure to asbestos, are found within the fibrosis or alveolar spaces
or occasionally in foreign-body giant cells. An asbestos body consists
of a central core fiber of asbestos that is coated with an iron-protein-mucopolysaccharide layer forming a golden-brown, segmented,
dumb bell appearance. Iron stains, e.g., Prussian blue, can make
detection easy
Asbestos body
Prussian blue stain/Asbestos body
