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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


    FEMORAL HEAD NECROSIS

    Fig. 1. A non-specific disease, more exactly a lesion, associated to various causes. In most cases, the condition is accompanied with bacterial osteomyelitis. The figure presents a necrotic focus (N) among the bone marrow of the femoral canal in a 40-day-old broiler chicken with osteomyelitis. H/E, Bar = 40 µm.

    Fig. 1. A non-specific disease, more exactly a lesion, associated to various causes. In most cases, the condition is accompanied with bacterial osteomyelitis. The figure presents a necrotic focus (N) among the bone marrow of the femoral canal in a 40-day-old broiler chicken with osteomyelitis. H/E, Bar = 40 µm.

     
    Fig. 2. The severe thinning of the cortex in the femoral neck region consequently to rickets, is among the factors predisposing to femoral head fractures and necroses. H/E, Bar = 50 µm.

    Fig. 2. The severe thinning of the cortex in the femoral neck region consequently to rickets, is among the factors predisposing to femoral head fractures and necroses. H/E, Bar = 50 µm.

     
    Fig. 3. Periosteal disruption and fracture in the proximal femoral region in a case of femoral head necrosis. H/E, Bar = 50 µm.

    Fig. 3. Periosteal disruption and fracture in the proximal femoral region in a case of femoral head necrosis. H/E, Bar = 50 µm.

     
    Fig. 4. Abnormal masses of hypertrophic cartilage, protruding into the epiphysis in rickets, that caused femoral head necrosis and fracture at later stage. H/E, Bar = 100 µm.

    Fig. 4. Abnormal masses of hypertrophic cartilage, protruding into the epiphysis in rickets, that caused femoral head necrosis and fracture at later stage. H/E, Bar = 100 µm.

     
    Fig. 5. Necrosis and hemorrhages among the prehypertrophic cartilage in a case of dyschondroplasia, that initiated femoral head necrosis and fracture in a broiler chicken. H/E, Bar = 25 µm.

    Fig. 5. Necrosis and hemorrhages among the prehypertrophic cartilage in a case of dyschondroplasia, that initiated femoral head necrosis and fracture in a broiler chicken. H/E, Bar = 25 µm.

     
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