Ascites is excess fluid in the space between the tissues lining the abdomen and abdominal organs (the peritoneal cavity).

Ascites is typically caused by liver disease. Disorders that may be associated with ascites include:

• Cirrhosis
• Hepatitis
• Portal vein thrombosis (clots in the veins of the liver)
• Constrictive pericarditis
• Congestive heart failure
• Liver cancer
• Ovarian cancer
• Protein-losing enteropathy
• Nephrotic syndrome
• Pancreatitis

Treatment may include medicines called diuretics, which help remove the fluid, and antibiotics, if infection develops.

Anyone who has ascites and develops new abdominal pain and fever should contact their health care provider immediately.