ASIATIC CHOLANGIOHEPATITIS Introduction

ASIATIC CHOLANGIOHEPATITIS Introduction

This disease, also called oriental cholangiohepatitis, is caused by infestation of the hepatobiliary system by a trematode, Clonorchis sinensis. It has a high incidence in the tropical regions of South East Asia, particularly among those living in the major sea ports and near river estuaries. The organism, - which is a type of liver fluke, develops in snails that act as an intermediate host. Free swimming from snails, the cercariae penetrate the flesh of freshwater fish, crabs and crayfish, which also act as an intermediate host. Ingestion of infected fish, crabs and crayfish, when eaten raw or improperly cooked, causes the infection in humans and other fish-eating mammals, es - which are the definitive hosts. Two other parasites, Opisthorchis , which has the same life cycle as Clonorchis , and Fasciola , the metacercariae of which colonise vegetation, can cause similar damage to the biliary channels. - ASIATIC CHOLANGIOHEPATITIS Introduction

This disease, also called oriental cholangiohepatitis, is caused by infestation of the hepatobiliary system by a trematode, Clonorchis sinensis. It has a high incidence in the tropical regions of South East Asia, particularly among those living in the major sea ports and near river estuaries. The organism, - which is a type of liver fluke, develops in snails that act as an intermediate host. Free swimming from snails, the cercariae penetrate the flesh of freshwater fish, crabs and crayfish, which also act as an intermediate host. Ingestion of infected fish, crabs and crayfish, when eaten raw or improperly cooked, causes the infection in humans and other fish-eating mammals, es - which are the definitive hosts. Two other parasites, Opisthorchis , which has the same life cycle as Clonorchis , and Fasciola , the metacercariae of which colonise vegetation, can cause similar damage to the biliary channels. - ASIATIC CHOLANGIOHEPATITIS Introduction

This disease, also called oriental cholangiohepatitis, is caused by infestation of the hepatobiliary system by a trematode, Clonorchis sinensis. It has a high incidence in the tropical regions of South East Asia, particularly among those living in the major sea ports and near river estuaries. The organism, - which is a type of liver fluke, develops in snails that act as an intermediate host. Free swimming from snails, the cercariae penetrate the flesh of freshwater fish, crabs and crayfish, which also act as an intermediate host. Ingestion of infected fish, crabs and crayfish, when eaten raw or improperly cooked, causes the infection in humans and other fish-eating mammals, es - which are the definitive hosts. Two other parasites, Opisthorchis , which has the same life cycle as Clonorchis , and Fasciola , the metacercariae of which colonise vegetation, can cause similar damage to the biliary channels. -