AE is caused by tumor-like or cyst-like tapeworm larvae growing in the body. AE usually involves the liver, but can spread to other organs of the body. Because the cysts are slow-growing, infection with AE may not produce any symptoms for many years.

• Pain or discomfort in the upper abdominal region.
• Weakness.
• Weight loss may occur as a result of the growing cysts.
• Symptoms may mimic those of liver cancer and cirrhosis of the liver.
• Hemoptysis may be present.