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    Book Contents

    1. Histopathology and Cytology Associated with Bacterial Diseases
    2. Histopathology and Cytology Associated with Viral Diseases
    3. Histopathology and Cytology Associated with Neoplastic Diseases
    4. Histopathology and Cytology Associated with Parasitic Diseases
    5. Histopathology and Cytology Associated with Mycotic Diseases
    6. Histopathology and Cytology Associated with Deficiency Diseases
    7. Histopathology and Cytology Associated with Other Diseases
    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.

     
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