Abdominal Ascariasis
摘要
Adult Ascaris worms live in the lumen of the small intestine, specifically in the jejunum and middle ileum. Symptomatic cases present with abdominal pain, acute or recurrent intestinal obstruction, appendicitis, intestinal perforation, or peritonitis. Biliary ascariasis is more common in females. It may present as biliary colic, acute cholecystitis, obstructive jaundice, cholangitis, or acute pancreatitis. Recurrent pyogenic cholangitis (RPC) involves biliary endothelial damage caused by Ascaris and secondary bacterial infection. It presents with intrahepatic brown pigment stones, multiple biliary strictures, cholangitis, and hepatic fibrosis.