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**Mainly cattle and dogs, occasionally in other species
**Mainly cattle and dogs, occasionally in other species
**Can be congenital in calves
**Can be congenital in calves
**Arise from serosa of pericardial, [[Pleural Cavity & Membranes Hyperplastic and Neoplastic - Pathology|pleural]] and [[Peritoneal Cavity - Anatomy & Physiology|peritoneal cavities]]
**Arise from serosa of pericardial, [[Pleural Neoplasia|pleural]] and [[Peritoneal Cavity - Anatomy & Physiology|peritoneal cavities]]
**Multiple small nodules, may be pedunculated, few milimeters to few centemeters, may present as villous projections
**Multiple small nodules, may be pedunculated, few milimeters to few centemeters, may present as villous projections
**May be associated with milky or bloody effusions
**May be associated with milky or bloody effusions
**Histologically usually appear similar to adenocarcinoma (papillary) or fibrosarcoma (spindle cells)
**Histologically usually appear similar to adenocarcinoma (papillary) or fibrosarcoma (spindle cells)
[http://w3.vet.cornell.edu/nst/nst.asp?Fun=Image&imgID=11611 Image of glandular type mesothelioma in a cat from Cornell Veterinary Medicine]
[http://w3.vet.cornell.edu/nst/nst.asp?Fun=Image&imgID=11611 Image of glandular type mesothelioma in a cat from Cornell Veterinary Medicine]
==Pleural==
*Has been found in cat, dog, cow, goat and horse
*Arise from pericardial, pleural and peritoneal surfaces
*May be related to inhalation of asbestos
*Grossly:
**Multiple discrete nodules
*Microscopically:
**Can appear as a carcinoma or fibrosarcoma depending on which tissue, covering or supporting, is predominant in the neoplasm
*Rarely metastasise but are considered malignant
{{Learning
|Vetstream = [https://www.vetstream.com/canis/Content/Disease/dis02568.asp Mesothelioma]
}}
[[Category:Peritoneal Cavity - Neoplastic Pathology]]
[[Category:Peritoneal Cavity - Neoplastic Pathology]]
[[Category:Cattle]][[Category:Peritoneal Cavity Diseases - Dog]]
[[Category:Peritoneal Diseases - Cattle]][[Category:Peritoneal Cavity Diseases - Dog]]
[[Category:Neoplasia]]
[[Category:Neoplasia]]
[[Category:To Do - Minor]][[Category:To Do - Respiratory]][[Category:To Do - Alimentary]]