PMC2809340_01
Moderate dilatation of the lumen of a preacinar artery (comparing its diameter with that of the adjacent bronchiole) that is occluded by clear eosinophilic material arranged in bands, and without red blood cells in its distal portion. Hematoxylin-eosin, x25.
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fig1
Pulmonary filed at medium magnification showing two intra-acinar vessels dilated by numerous puntiform, anucleated eosinophilic structures, much smaller in size than those of red blood cells. Hemotoxylin-eosin, x100.
JTRAN2009-650703.002.jpg
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fig2
Immunohistochemical staining with Factor XIIIa staining the intravascular anucleated structures, showing the platelet origin of the thrombus. Immunohistochemistry, Factor XIIIa, x250.
JTRAN2009-650703.003.jpg
PMC2809340_01_JTRAN2009-650703.003.jpg
fig3