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Book Contents

Histopathology and Cytology of
Poultry Diseases
By Ivan Dinev, DVM, PhD


HISTOMONIASIS

Fig. 1. Histomoniasis, liver, turkey
poult. Coagulative necrotic foci (N),
haemorrhagically demarcated from
the adjacent liver parenchyma. H/E,
Bar = 40 µm.

Fig. 1. Histomoniasis, liver, turkey poult. Coagulative necrotic foci (N), haemorrhagically demarcated from the adjacent liver parenchyma. H/E, Bar = 40 µm.

 
Fig. 2. Multiple oval-shaped histomonads
(arrows) in a liver tissue
cross-section, pheasant. H/E, Bar =
25 µm.

Fig. 2. Multiple oval-shaped histomonads (arrows) in a liver tissue cross-section, pheasant. H/E, Bar = 25 µm.

 
Fig. 3. Histomoniasis, liver, turkey
poult. Initial organization of a necrotic
focus in the liver. A wreath of
foreign-body giant cells (arrow – a)
in the periphery of necrotic area.
Parasites (arrow – b) are also seen
on the tissue cross-section. H/E, Bar
= 35 µm.

Fig. 3. Histomoniasis, liver, turkey poult. Initial organization of a necrotic focus in the liver. A wreath of foreign-body giant cells (arrow – a) in the periphery of necrotic area. Parasites (arrow – b) are also seen on the tissue cross-section. H/E, Bar = 35 µm.

 
Fig. 4. Regenerative reparative processes
at a later stage of the organization
of a hepatic necrotic focus
in a turkey poult. Histomonas forms
(arrows) are still visible. H/E, Bar = 40
µm.

Fig. 4. Regenerative reparative processes at a later stage of the organization of a hepatic necrotic focus in a turkey poult. Histomonas forms (arrows) are still visible. H/E, Bar = 40 µm.

 
Fig. 5. Histomoniasis, caecum – transverse
cross-section, turkey poult. Coagulative
necrosis (N) affecting the
mucosa and submucosa of the intestinal
wall. H/E, Bar = 100 µm.

Fig. 5. Histomoniasis, caecum – transverse cross-section, turkey poult. Coagulative necrosis (N) affecting the mucosa and submucosa of the intestinal wall. H/E, Bar = 100 µm.

 
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