Created page with ''''Primary tumours''' are rare: Mesothelioma, Lipoma. '''Secondary tumours''' are uncommon. *Transcoelomic spread, direct implantation *Ovarian, bile duct carcinomas, [[…'
'''Primary tumours''' are rare: [[Mesothelioma]], [[Lipoma]].
'''Secondary tumours''' are uncommon.
*Transcoelomic spread, direct implantation
*Ovarian, bile duct carcinomas, [[Carcinoma#Pancreatic|pancreatic]] and intestinal adenocarcinomas, gastric squamous cell carcinomas or any other abdominal neoplasia
*Widespread metastases on [[Peritoneal cavity - Anatomy & Physiology|peritoneum]] = carcinosis




[[Mesothelioma]]

*'''Lipomas''' - horses
**Arise from mesentery (particularly in horses), omentum (in dogs)
**Can become large and pedunculated (horses)
**May lead to strangulation of intestine
**On cut surface may become friable and necrotic with only the superficial surface remaining viable

==Secondary tumours==

*Uncommon
*Transcoelomic spread, direct implantation
*Ovarian, bile duct carcinomas, [[Carcinoma#Pancreatic|pancreatic]] and intestinal adenocarcinomas, gastric squamous cell carcinomas or any other abdominal neoplasia
*Widespread metastases on [[Peritoneal cavity - Anatomy & Physiology|peritoneum]] = carcinosis

*'''Carcinomas'''
**[http://w3.vet.cornell.edu/nst/nst.asp?Fun=Image&imgID=11314 Image of carcinoma in a cow's peritoneum from Cornell Veterinary Medicine]
**Must be differentiated from mesotheliomas
**More common than sarcomas
**Sometimes very scirrhous
**May resemble chronic [[Peritonitis - Pathology|peritonitis]] when present with ascites
**Absence of adhesions
[[Category:Peritoneal_Cavity_-_Pathology]]
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