**Large Intestinal Fluke (Fasciolopsis buski)**

Large intestinal fluke (Fasciolopsis buski) is a common intestinal parasite in Southeast Asia. It is the largest fluke species, characterized by its intestine being divided into two single branches, unlike the liver fluke (Fasciola spp) which has smaller, unbranched intestines.

Eggs of large intestinal fluke resemble those of liver fluke.

Fasciolopsis buski parasites live in the duodenum or jejunum of humans and pigs.

The second intermediate host of Fasciolopsis buski is aquatic plants such as water chestnut, lotus root, water hyacinth, water lily, etc.

Clinical manifestations of Fasciolopsis buski infection:

• Mild: Upper abdominal pain, nausea, diarrhea.

• Severe: Edema, abdominal distension, jejunal dilatation, duodenal torsion, loose, pale yellow, bloodless, foul-smelling stools.

Epidemic area: Northern region.

Diagnosis:

• Stool examination for fluke eggs.

• CTM: Increased BCAT (20 => 25%).

Treatment: Praziquantel.