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Imaging diagnosis of clonorchiasis

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Abstract

Among several diagnostic tools for clonorchiasis (Clonorchis sinensis infection), radiologic examinationsare commonly used in clinical practices. During the 2 past decades, many reports regarding imaging findings ofclonorchiasis were introduced. The basic imaging finding of clonorchiasis is diffuse dilatation of the peripheral intra-hepatic bile ducts, without dilation of the large intrahepatic or extrahepatic bile ducts. By this finding, however, activeclonorchiasis cannot be differentiated from cured infection. Some recent radiologic studies suggested specific findingsof active clonorchiasis. Besides direct demonstration of worms, increased periductal echogenicity on sonography andperiductal enhancement on dynamic contrast-enhanced CT or MR imaging possibly represent active clonorchiasis.Those images of the liver clonorchiasis are known to be correlated with worm burdens (EPG counts) in their frequen-cy and also severity. The images of cholangiocarcinoma associated with clonorchiasis show both the tumor withobstruction images and diffuse dilatation of the peripheral intrahepatic bile ducts. Radiological images can be a goodpractical alternative diagnostic method of clonorchiasis.

참고문헌 (23)

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