Re: Can large flukes be seen on ultrasound?

Ultrasound would show enlarged bile ducts, not the flukes.
The definitive test is to look for the eggs in the stool sample. One adult fluke lays 2000-4000 eggs each day and the eggs are excreted through the bile ducts and feces of the infected person.

If liver fluke is left undetected for years, this can become a very serious disease and cause destruction of the liver. Most people with liver fluke infection are completely unaware because they experience no symptoms at all. A small percentage of patients experience fatigue and non-specific abdominal discomfort, which easily gets mistaken for indigestion or irritable bowel syndrome.

Flukes are very hard to eradicate. It can be done but often takes a long time depending on the amount of flukes in the liver.