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|pagetitle =Effusions
 
|pagetitle =Effusions
 
|pagebody =<div style="text-align: left; direction: ltr; margin-left: 1em;">
 
|pagebody =<div style="text-align: left; direction: ltr; margin-left: 1em;">
'''Effusions'''- Increased amount of fluid in [[Peritoneal cavity - Anatomy & Physiology|peritoneal]], pleural or pericardial cavity. They are not a disease in itself. Effusions indicate pathological process affecting fluid production and/or removal.
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'''Effusions'''- Increased amount of fluid in [[Peritoneal cavity - Anatomy & Physiology|peritoneal]], pleural or pericardial cavity. They are not diseases in themselves but they indicate the presence of a pathological process which has altered the balance of fluid production and removal.
Classification
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*Based on cell counts and total protein ([[Transudate]], [[Modified Transudate]], [[Exudate]])
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The classification of effusions is based on its '''total cell count''' and '''total protein content''':
*[[Haemorrhagic Effusion|Haemorrhage]]
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*[[Transudate|'''Transudates''']] and [[Modified Transudate|'''modified transudates''']] have the lowest protein contents and cell counts.  They usually result from imbalances in the Starling forces.
*[[Chylous Effusion]]
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*[[Exudate|'''Exudates''']] have the highest cell counts and protein contents and usually occur with an inflammatory or neoplastic disease process.
Transudate and modified transudate are usually present in the clinical sign '''"ascites"'''.
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Effusions may also occur when fluids leak into the abdominal or thoracic cavities.  Fluids that may be involved include:
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*'''Urine''', producing a '''uroabdomen''' (a [[Modified Transudate|modified transudate]] or [[Exudate|exudate]]).
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*'''Bile''', producing [[Peritonitis - Pathology#Causes of peritonitis|'''bile peritonitis''']] (a [[Modified Transudate|modified transudate]] or [[Exudate|exudate]])).
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*'''Pancreatic juices''' leaking in [[Pancreas - Inflammatory Pathology|'''pancreatitis''']] (a [[Modified Transudate|modified transudate]] or [[Exudate|exudate]]).
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*'''Blood''', producing a '''haemabdomen''' (a [[Haemorrhagic Effusion|haemorrhagic effusion]]).
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*'''Chyle''' (or lymph), producing a [[Chylous Effusion|chylous effusion]] in the thorax or abdomen.
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*'''Pseudochyle''', a mixture of cellular debris and lipid that may resemble a [[Chylous Effusion|chylous effusion]].
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'''Ectopic sources of fluid''': '''Urine'''(uroabdomen - [[Transudate|transudate]] or [[Modified Transudate|modified transudate]], '''Bile'''
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([[Peritonitis - Pathology#Causes of peritonitis|bile peritonitis]], green in colour, [[Modified Transudate|modified transudate]] or [[Exudate|exudate]]), [[Pancreas - Inflammatory Pathology|'''Pancreatitis''']] ([[Modified Transudate|modified transudate]] or [[Exudate|exudate]]).
   
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[[Category:Peritoneal Cavity - Pathology]]
 
[[Category:Peritoneal Cavity - Pathology]]
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[[Category:To_Do_-_James]]
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