The role of endoscopic ultrasound(EUS)as a diagnostic and therapeutic modality for the management of various gastrointestinal diseases has been expanding.The imaging or intervention for various liver diseases has primarily been the domain of radiologists.With the advances in EUS,the domain of endosonologists is rapidly expanding in the field of hepatology.The ability to combine endoscopy and sonography in one hybrid device is a unique property of EUS,together with the ability to bring its probe/transducer near the liver,the area of interest.Its excellent spatial resolution and ability to provide real-time images coupled with several enhancement techniques,such as contrast-enhanced(CE)EUS,have facilitated the growth of EUS.The concept of“Endo-hepatology”encompasses the wide range of diagnostic and therapeutic procedures that are now gradually becoming feasible for managing various liver diseases.Diagnostic advancements can enable a wide array of techniques from elastography and liver biopsy for liver parenchymal diseases,to CE-EUS for focal liver lesions to portal pressure measurements for managing various liver conditions.Similarly,therapeutic advancements range from EUS-guided eradication of varices,drainage of bilomas and abscesses to various EUS-guided modalities of liver tumor management.We provide a comprehensive review of all the different diagnostic and therapeutic EUS modalities available for the management of various liver diseases.A synopsis of all the technical details involving each procedure and the available data has been tabulated,and the future trends in this area have been highlighted.
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