Yeungnam Univ J Med Search


Yeungnam Univ J Med > Volume 23(2); 2006 > Article
Yeungnam University Journal of Medicine 2006;23(2):171-181.
DOI:    Published online December 31, 2006.
Clinical Features of Clonorchiasis.
Kook Hyun Kim, Byung Ik Jang, Tae Nyeun Kim
Department of Internal Medicine, College of Medicine, Yeungnam University, Daegu, Korea.
BACKGROUND: Clonorchis sinensis is an important human parasite that is usually found in the biliary tract. It is widely distributed in East Asia in Taiwan, Japan, China and Korea. About 2 million people are estimated to be infected with C. sinensis in Korea. This study was conducted to evaluate the state of infestation and clinical aspects of C. sinensis. MATERIAL AND METHODS: We evaluate 1,063 patients with clonorchiasis retrospectively at Yeungnam University Hospital and Health Promotion Center from January 2001 to December 2003. All patients were diagnosed by a positive stool test for C. sinensis eggs. Clinical features, laboratory data and imaging studies were evaluated. RESULTS: The ratio between affected males and females was 3.6 : 1. The highest infection rate was noted in the 40-60 age groups regardless of sex. The infection rate of C. sinensis among the residents of urban areas was higher than in rural areas. There were 813 (76.5%) patients who were asymptomatic. Common symptoms included right upper abdominal pain in 7.6% and epigastric pain in 7.2%. For the laboratory studies, serum ALP and GGT levels were within normal limits in 85.2% and 56.0% respectively. Peripheral eosinophilia was noted in 66.1% of cases. Of the 83 cases undergoing ERCP, 27 cases (32.5%) showed peripheral dilatation of the intrahepatic duct. CONCLUSION: This study suggests that C. sinensis infection is still endemic even in rural areas of Korea and that asymptomatic infections are common. Further work should be focused on the early diagnosis and treatment of patients with subclinical infection.
Key Words: Clonorchis sinensis, Eosinophilia


Browse all articles >

Editorial Office
170 Hyeonchung-ro, Nam-gu, Daegu 42415, Korea
Tel: +82-53-640-6832    Fax: +82-53-651-0394    E-mail:                

Copyright © 2021 by Yeungnam University College of Medicine.

Developed in M2PI

Close layer
prev next