Accumulation of fluid in the abdominal cavity is known as _____.
Ascites in Cats. Also known as abdominal effusion, ascites (pronounced ass-eye-tees), is a condition in cats characterised by the accumulation of fluid in the abdominal cavity.scites in Cats. Also known as abdominal effusion, ascites (pronounced ass-eye-tees), is a condition in cats characterised by the accumulation of fluid in the abdominal cavity.