*'''Vasculitis''', caused by '''[[Feline Infectious Peritonitis|feline infectious peritonitis virus]]''' (FIPV) or '''neoplasia'''. ([[Feline Infectious Peritonitis|Further discussion of the effusion encountered with FIP.]]) | *'''Vasculitis''', caused by '''[[Feline Infectious Peritonitis|feline infectious peritonitis virus]]''' (FIPV) or '''neoplasia'''. ([[Feline Infectious Peritonitis|Further discussion of the effusion encountered with FIP.]]) |