PMC2990386_01
Acellular laminated ring-like structures intermingled with macrophages (Hematoxylin-eosin-100x).
PRI2010-602523.001.jpg
PMC2990386_01_PRI2010-602523.001.jpg
fig1
Next to the central necrotic zone were several spherical laminated rings admixed with macrophages (Figure 1).
Liesegang rings are positive to PAS stains (400x).
PRI2010-602523.002.jpg
PMC2990386_01_PRI2010-602523.002.jpg
fig2
The rings had an amorphous, central core surrounded by a double layered wall, accentuated with PAS (Figure 2) and negative von Kossa, Grocott and trichrome stains.