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{{review}}
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{{toplink
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|backcolour = D1EEEE
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|linkpage =Cardiorespiratory System - Pathology
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|linktext =Cardiorespiratory System
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|maplink = Cardiorespiratory System (Content Map) - Pathology
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|pagetype =Pathology
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|sublink1=Pleural Cavity and Membranes - Pathology
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|subtext1=PLEURAL CAVITY AND MEMBRANES
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}}
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==Pleuritis==
 
==Pleuritis==
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*Granulomatous pleuritis may cause [[Bones Hyperplastic and Neoplastic - Pathology#Hypertrophic osteopathy|hypertrophic osteopathy]]
 
*Granulomatous pleuritis may cause [[Bones Hyperplastic and Neoplastic - Pathology#Hypertrophic osteopathy|hypertrophic osteopathy]]
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===Pyothorax (Thoracic empyema)===
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===[[Pyothorax]] (Thoracic empyema)===
 
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*Purulent effusion in the pleural space
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*Most significant in:
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**'''Horses'''
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***Usually secondary to [[:Category:Pneumonia|pneumonia]] or [[Pulmonary Abscesses|lung abscesses]]
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***[[:Category:Streptococcus species|''Streptococci'']] are most commonly isolated
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***Usually yellow exudate
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***Often triggered by stress of travelling, competition or similar
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**'''Dogs'''
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***Often results from migrating grass awns
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***[[:Category:Actinomycetes|''Actinomyces, Nocardia'']] and [[Bacteroides|''Bacteroides'' spp.]] are the most frequently recovered organisms
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***Usually blood stained viscous or creamy exudate, often bilateral
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***Yellowish granules may be present within the exudate
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***Thickened pleura, sometimes fibrinous
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**'''Cats'''
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***Pathogenesis is unclear, possible due to bite wounds or penetrated oesophagus
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***[[Pasteurella multocida|''P. multocida'']] and other Gram-negative organisms are frequently recovered
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***Usually creamy yellow or greyish brown exudate, often bilateral
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[[Category:Pleural Cavity and Membranes - Pathology]]
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[[Category:Respiratory System - Inflammatory Pathology]]
       
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