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Book Contents

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


AVIAN TUBERCULOSIS

Fig. 1. Tubercle, liver, ostrich. Centrally,
a cluster of epitheloid cells (that
are fusiform in birds), radially directed
to the centre of the granuloma, is
visible. Appearance of foreign bodytype
giant cells and initial capsulation.
H/E, Bar = 50 µm.

Fig. 1. Tubercle, liver, ostrich. Centrally, a cluster of epitheloid cells (that are fusiform in birds), radially directed to the centre of the granuloma, is visible. Appearance of foreign bodytype giant cells and initial capsulation. H/E, Bar = 50 µm.

 
Fig. 2. Tubercle, liver, hen. Centrally,
a caseous necrosis of gathered epitheloid
cells, forming the basic mass of
the granuloma. Peripherally, foreign
body-type giant cells, arranged one
by the other in a wreath-like fashion.
H/E, Bar = 35 µm.

Fig. 2. Tubercle, liver, hen. Centrally, a caseous necrosis of gathered epitheloid cells, forming the basic mass of the granuloma. Peripherally, foreign body-type giant cells, arranged one by the other in a wreath-like fashion. H/E, Bar = 35 µm.

 
Fig. 3. Tubercle, bone marrow, ostrich.
Caseous necrosis and capsulation
of the granuloma. H/E, Bar = 25
µm.

Fig. 3. Tubercle, bone marrow, ostrich. Caseous necrosis and capsulation of the granuloma. H/E, Bar = 25 µm.

 
Fig. 4. Symmetrical, caseous necrotic
foci in the intestinal wall in a hen.
Peripherally, foreign body-type giant
cells. H/E, Bar = 40 µm.

Fig. 4. Symmetrical, caseous necrotic foci in the intestinal wall in a hen. Peripherally, foreign body-type giant cells. H/E, Bar = 40 µm.

 
Fig. 5. Tubercle, liver, hen. A characteristic
finding in avian tuberculosis
are conglomerate tubercles, formed
by several nodules having merged
into a common mass. H/E, Bar = 50
µm.

Fig. 5. Tubercle, liver, hen. A characteristic finding in avian tuberculosis are conglomerate tubercles, formed by several nodules having merged into a common mass. H/E, Bar = 50 µm.

 
This book is protected by the copyright law. The reproduction, imitation or distribution of the book in whole or in part, in any format (electronic, photocopies etc.) without the prior consent, in writing, of copyright holders is strictly prohibited.

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