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===[[Accessory Lungs]]===
 
===[[Accessory Lungs]]===
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*Most common developmental disorder, especially in cattle
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*Incompletely differentiated pulmonary tissue present anywhere in the trunk
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*Grossly:
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**Lobulated oedematous masses
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**May be connected to uper alimentary tract
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*Histologically:
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**Dialated structures resembling bronchioles
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**Alveoli and ducts developed to varying degree
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*May cause birthing difficulties
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[[Category:Lungs - Developmental Pathology]]
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[[Category:Respiratory System - Developmental Pathology]]
      
===Ciliary dyskinesia===
 
===Ciliary dyskinesia===
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