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Created page with "==Introduction== Papillomas are '''benign epithelial tumours''' which can occur on many species of fish from both '''fresh-water and marine''' habitats in widely scattered geogra..."
==Introduction==
Papillomas are '''benign epithelial tumours''' which can occur on many species of fish from both '''fresh-water and marine''' habitats in widely scattered geographical areas.
Most papillomatous epithelial lesions are presumed to have a '''viral or partly viral aetiology'''. Environmental factors have also been found to contribute to the condition.
Notable examples include:
:'''[[Carp Pox]]'''
:Atlantic Salmon papilloma
:''''Cauliflower disease'''' in the European eel
==Clinical Signs==
Clinical signs can vary from '''small raised nodules''' to large, grey-to-black epithelial growths.
They are usually '''multiple''' and can appear in any location of the body.
Other clinical signs are only seen if the nodules restrict the fish's ability to feed.
Tumours grow at different rates, sometimes dependent on environmental temperature or the host's immunity.
==Diagnosis==
Diagnosis is usually made on the basis of the clinical signs.
'''Histopathology''' will reveal epithelial hyperplasia.
'''Electron microscopy''' may reveal viral particles or viral inclusion bodies, but this does not occur in all cases by far.
==Treatment==
'''No treatment''' is usually necessary. Their majoy problem is the disfigurement they cause.
'''Surgical removal''' is possible if the growths are obstructing the fish in any way.
{{Learning
|flashcards = [[Ornamental Fish Q&A 24]]
}}
=References==
Hoole, D. (2001) '''Diseases of carp and other cyprinid fishes''' ''John Wiley and Sons''
Roberts, H. (2009) '''Fundamentals of ornamental fish health''' ''John Wiley and Sons''
Roberts, R. (2001) '''Fish Pathology''' ''Elsevier Health Sciences''
[[Category:To Do - Helen]]
[[Category:To Do - Review]]
Papillomas are '''benign epithelial tumours''' which can occur on many species of fish from both '''fresh-water and marine''' habitats in widely scattered geographical areas.
Most papillomatous epithelial lesions are presumed to have a '''viral or partly viral aetiology'''. Environmental factors have also been found to contribute to the condition.
Notable examples include:
:'''[[Carp Pox]]'''
:Atlantic Salmon papilloma
:''''Cauliflower disease'''' in the European eel
==Clinical Signs==
Clinical signs can vary from '''small raised nodules''' to large, grey-to-black epithelial growths.
They are usually '''multiple''' and can appear in any location of the body.
Other clinical signs are only seen if the nodules restrict the fish's ability to feed.
Tumours grow at different rates, sometimes dependent on environmental temperature or the host's immunity.
==Diagnosis==
Diagnosis is usually made on the basis of the clinical signs.
'''Histopathology''' will reveal epithelial hyperplasia.
'''Electron microscopy''' may reveal viral particles or viral inclusion bodies, but this does not occur in all cases by far.
==Treatment==
'''No treatment''' is usually necessary. Their majoy problem is the disfigurement they cause.
'''Surgical removal''' is possible if the growths are obstructing the fish in any way.
{{Learning
|flashcards = [[Ornamental Fish Q&A 24]]
}}
=References==
Hoole, D. (2001) '''Diseases of carp and other cyprinid fishes''' ''John Wiley and Sons''
Roberts, H. (2009) '''Fundamentals of ornamental fish health''' ''John Wiley and Sons''
Roberts, R. (2001) '''Fish Pathology''' ''Elsevier Health Sciences''
[[Category:To Do - Helen]]
[[Category:To Do - Review]]