Changes

| '''F. Hepatica'''

| '''F. Hepatica'''

|}

|}

[[Image:Fasciola hepatica.jpg|300px|thumb|right|'''Fasciola hepatica (Copyright Adam Cuerden, Wikimedia Commons) ''']]

[[Image:Fasciola hepatica.jpg|300px|thumb|right|'''Fasciola hepatica (Copyright Adam Cuerden, Wikimedia Commons) ''']]

===Acute Fascioliasis===

===Acute Fascioliasis===

The acute disease is a less common type of Fasciola hepatica, and generally occurs 2-6 weeks after large ingestion of metacercariae.  The young liver flukes migrate through the liver parenchyma causing severe haemorrhaging, due to the damage to the liver vasculature.

The acute disease is a less common type of Fasciola hepatica, and generally occurs 2-6 weeks after large ingestion of metacercariae.  The young liver flukes migrate through the liver parenchyma causing severe haemorrhaging, due to the damage to the [[Liver - Anatomy & Physiology|liver]] vasculature.

Acute disease associated with immature fluke migration through the [[Liver - Anatomy & Physiology|liver]]  

This occurs in late autumn and winter, mainly between the months of August to October.

This occurs in late autumn and winter, mainly between the months of August to October. Outbreaks of acute fascioliasis usually present as sudden deaths.  On examination infected animals are weak, with pale mucous membranes.  They may also have enlarged livers, and the liver surface may be cover with a fibrinous peritonitis, particularly evident on the ventral lobe. Tracts become filled with blood and degenerate hepatocytes later infiltrated with [[Eosinophils|eosinophils]], [[Lymphocytes|lymphocytes]] and replaced by fibrosis.

[[Image:Fasciola hepatica - life cycle.jpg|300px|thumb|right|'''Fasciola hepatica life cycle(Copyright Centres for Disease Control and Prevention) ''']]

[[Image:Fasciola hepatica - life cycle.jpg|300px|thumb|right|'''Fasciola hepatica life cycle(Copyright Centres for Disease Control and Prevention) ''']]

'''Chronic Fascioliasis'''

 

 

===Chronic Fascioliasis===

 

======Gross======

======Gross======

*[[Liver - Anatomy & Physiology|liver]] is reduced in size, unevenly

*[[Liver - Anatomy & Physiology|liver]] is reduced in size, unevenly