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Am. J. Trop. Med. Hyg., 73(6), 2005, pp. 1139-1144
Copyright © 2005 by The American Society of Tropical Medicine and Hygiene

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CORRELATION BETWEEN SONOGRAPHIC FINDINGS AND INFECTION INTENSITY IN CLONORCHIASIS

MOON SEOK CHOI, DONGIL CHOI, MIN-HO CHOI, ZHUO JI, ZHIMIN LI, SEUNG-YULL CHO, KWANG-SEON HONG, HAN-JONG RIM, AND SUNG-TAE HONG*
Departments of Medicine and Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea; Department of Molecular Parasitology, Sungkyunkwan University School of Medicine, Suwon, Korea; Department of Parasitology and Entomology, Heilongjiang CDC, China; Korea Association of Health Promotion, Seoul, Korea; Department of Parasitology and Tropical Medicine, and Institute of Endemic Diseases, Seoul National University College of Medicine, Seoul, Korea

This prospective study was performed to evaluate the diagnostic usefulness of sonography in terms of the intensity of Clonorchis sinensis infection. Total 1,384 residents were subjected to this study at an endemic area in China, in which a clonorchiasis control program had been performed. History taking, fecal examination, and sonography were performed, and 87.8% of the subjects were found to be egg positive. Sonography showed intrahepatic bile duct dilatation (IHDD) in 68.4% of the subjects, increased periductal echogenicity (IPDE) in 24.5%, and gallbladder sludge (GBS) in 20.8%. Moreover, the grades of these sonographic findings were higher in subjects with heavier infections as determined by egg counts. IHDD was found to be the most accurate sonographic indicator of any infection degree (76.3), whereas IPDE and GBS were useful only in cases of heavy infection. Subjective symptoms were found to be only poorly correlated with sonographic findings or infection intensity.

Received November 26, 2004. Accepted for publication July 27, 2005.

Financial support: This study was supported by a research grant from the Korea Research Foundation, KRF-2003-042-E00034 (2003).

* Address correspondence to Sung-Tae Hong, Department of Parasitology and Tropical Medicine and Institute of Endemic Diseases, Seoul National University College of Medicine, 28 Yongon-Dong, Jongno-Gu, Seoul 110-779, Korea. E-mail: hst{at}snu.ac.kr.

Authors’ addresses: Moon Seok Choi, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Irwon-Dong, Gangnam-Gu, Seoul 135-710, Korea, Telephone: 82-2-3410-3409, Fax: 82-2-3410-3849, E-mail: mschoi{at}smc.samsung.co.kr. Dongil Choi, Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Irwon-Dong, Gangnam-Gu, Seoul 135-710, Korea, Telephone: 82-2-3410-2518, Fax: 82-2-3410-2559, E-mail: dichoi{at}smc.samsung.co.kr. Min-Ho Choi, Department of Parasitology and Tropical Medicine, and Institute of Endemic Diseases, Seoul National University, College of Medicine, 28 Yongon-Dong, Jongno-Gu, Seoul 110-799, Korea, Telephone: 82-2-740-8341, Fax: 82-2-765-6142, E-mail: mhchoi{at}snu.ac.kr. Zhuo Ji and Zhimin Li, Department of Parasitology and Entomology, Heilongjiang Province Center for Disease Control and Prevention, Xiangfang-qiu, Harbin, Heilongjiang Province, China, Telephone: 82-451-5566-4031, Fax: 82-451-5565-1447. Seung-Yull Cho, Department of Molecular Parasitology, Sungkyunkwan University School of Medicine, Suwon 440-746, Korea, Telephone: 82-31-299-6250, Fax: 82-31-293-3813, E-mail: seungyl{at}med.skku.ac.kr. Kwang-Seon Hong, Bureau of Health Promotion, Korea Association of Health Promotion, Seoul, 157-704, Korea, Telephone: 82-2-2601-6144, Fax: 82-2-2690-4905, E-mail: kah6144{at}yahoo.co.kr. Han-Jong Rim, Korea Association of Health Promotion, Seoul, 157-704, Korea, Telephone: 82-2-2601-6141, Fax: 82-2-2690-4905. Sung-Tae Hong, Department of Parasitology and Tropical Medicine, and Institute of Endemic Diseases, Seoul National University, College of Medicine, 28 Yongon-Dong, Jongno-Gu, Seoul 110-779, Korea, Telephone: 82-2-740-8343, Fax: 82-2-765-6142, E-mail: hst{at}snu.ac.kr.

Reprint requests: Sung-Tae Hong, Department of Parasitology and Tropical Medicine, and Institute of Endemic Diseases, Seoul National University College of Medicine, 28 Yongon-Dong, Jongno-Gu, Seoul 110-779, Korea, Telephone: 82-2-740-8343, Fax: 82-2-765-6142, E-mail: hst{at}snu.ac.kr.






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Copyright © 2005 by the American Society of Tropical Medicine and Hygiene.