Elastography is one of technologies assisting diagnosis ofsolid pancreatic lesions(SPL). This technology has been previously used for measuring the stiffness of various organs based on a principle of "harder the ...Elastography is one of technologies assisting diagnosis ofsolid pancreatic lesions(SPL). This technology has been previously used for measuring the stiffness of various organs based on a principle of "harder the lesions, higher chance for malignancy". Two elastography techniques; strain and shear wave elastography, are available. For endoscopic ultrasound(EUS), only the former is existing. To interpret results of EUS elastography for SPL, 3 methods are used:(1) pattern recognition;(2) strain ratio; and (3) strain histogram. Based on results of existing studies, these 3 techniques provide high sensitivity but low to moderate specificity and accuracy rate. This review will summarize all available information in order to update current situation of using elastography for an evaluation of SPLs to readers.展开更多
Cystic lesions in a variety of organs are being increasingly recognized as an incidental finding on cross-sectional imaging.These lesions can be benign,premalignant or malignant.When these cystic lesions are small it ...Cystic lesions in a variety of organs are being increasingly recognized as an incidental finding on cross-sectional imaging.These lesions can be benign,premalignant or malignant.When these cystic lesions are small it can be difficult to characterize them radiologically.However,with appropriate clinical history and knowledge of typical imaging features of cystic pancreatic lesions this can enable accurate diagnosis and thus guide appropriate treatment.In this review,we provide an overview of the most common types of cystic lesions and their appearance on computer tomography,magnetic resonance imaging and ultrasound.We will also discuss the follow up and management strategies of these cystic lesions.展开更多
文摘Elastography is one of technologies assisting diagnosis ofsolid pancreatic lesions(SPL). This technology has been previously used for measuring the stiffness of various organs based on a principle of "harder the lesions, higher chance for malignancy". Two elastography techniques; strain and shear wave elastography, are available. For endoscopic ultrasound(EUS), only the former is existing. To interpret results of EUS elastography for SPL, 3 methods are used:(1) pattern recognition;(2) strain ratio; and (3) strain histogram. Based on results of existing studies, these 3 techniques provide high sensitivity but low to moderate specificity and accuracy rate. This review will summarize all available information in order to update current situation of using elastography for an evaluation of SPLs to readers.
文摘Cystic lesions in a variety of organs are being increasingly recognized as an incidental finding on cross-sectional imaging.These lesions can be benign,premalignant or malignant.When these cystic lesions are small it can be difficult to characterize them radiologically.However,with appropriate clinical history and knowledge of typical imaging features of cystic pancreatic lesions this can enable accurate diagnosis and thus guide appropriate treatment.In this review,we provide an overview of the most common types of cystic lesions and their appearance on computer tomography,magnetic resonance imaging and ultrasound.We will also discuss the follow up and management strategies of these cystic lesions.
