Diffusion-weighted magnetic resonance imaging for non-neoplastic conditions in the hepatobiliary and pancreatic regions: pearls and potential pitfalls in imaging interpretation

Verfasser / Beitragende:
[Nam Lee, Suk Kim, Dong Kim, Hyung Seo, Hyun Kim, Hong Jo, Tae Kim]
Ort, Verlag, Jahr:
2015
Enthalten in:
Abdominal Imaging, 40/3(2015-03-01), 643-662
Format:
Artikel (online)
ID: 605493979
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024 7 0 |a 10.1007/s00261-014-0235-5  |2 doi 
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245 0 0 |a Diffusion-weighted magnetic resonance imaging for non-neoplastic conditions in the hepatobiliary and pancreatic regions: pearls and potential pitfalls in imaging interpretation  |h [Elektronische Daten]  |c [Nam Lee, Suk Kim, Dong Kim, Hyung Seo, Hyun Kim, Hong Jo, Tae Kim] 
520 3 |a Potentially, diffusion-weighted magnetic resonance imaging (DWI) can assess the functional information on concerning the status of tissue cellularity, because increased cellularity is associated with impeded diffusion. DWI in the hepatobiliary and pancreatic regions has demonstrated the usefulness to detect malignant lesions and differentiate them from benign lesions. However, it has been shown more recently that there is some overlap in ADC values for benign and malignant neoplasms. Moreover, some non-neoplastic lesions in the hepatobiliary and pancreatic regions exhibit restricted diffusion on DWI, because of pus, inflammation, or high cellularity. Focal eosinophilic liver disease, hepatic inflammatory myofibroblastic tumor, granulomatous liver disease, acute cholecystitis, xanthogranulomatous cholecystitis, focal pancreatitis, or autoimmune pancreatitis frequently exhibit restricted diffusion on DWI, which may be confused with malignancy in the hepatobiliary and pancreatic regions. Thus, DWI should not be interpreted in isolation, but in conjunction with other conventional images, to avoid the diagnostic pitfalls of DWI. Nevertheless, the presence of diffusion restriction in the non-neoplastic lesions sometimes provides additional information regarding the diagnosis, in problematic patients where conventional images have yielded equivocal findings. DWI may help differentiate hepatic abscess from malignant necrotic tumors, gallbladder empyema from dense bile or sludge in the gallbladder, and pylephlebitis from bland thrombosis in the portal vein. Therefore, knowledge of DWI findings to conventional imaging findings of diffusion-restricted non-neoplastic conditions in the hepatobiliary and pancreatic regions helps establishing a correct diagnosis. 
540 |a Springer Science+Business Media New York, 2014 
690 7 |a Diffusion-weighted magnetic resonance imaging  |2 nationallicence 
690 7 |a Liver diseases  |2 nationallicence 
690 7 |a Bile tract diseases  |2 nationallicence 
690 7 |a Pancreatic diseases  |2 nationallicence 
700 1 |a Lee  |D Nam  |u Department of Radiology, Biomedical Research Institute, Pusan National University Hospital, Pusan National University School of Medicine, Pusan National University, #179, Gudeok-Ro, Seo-Gu, 602-739, Busan, Republic of Korea  |4 aut 
700 1 |a Kim  |D Suk  |u Department of Radiology, Biomedical Research Institute, Pusan National University Hospital, Pusan National University School of Medicine, Pusan National University, #179, Gudeok-Ro, Seo-Gu, 602-739, Busan, Republic of Korea  |4 aut 
700 1 |a Kim  |D Dong  |u Department of Internal Medicine, Biomedical Research Institute, Pusan National University Hospital, Pusan National University School of Medicine, Pusan National University, 602-739, Busan, Republic of Korea  |4 aut 
700 1 |a Seo  |D Hyung  |u Department of Surgery, Biomedical Research Institute, Pusan National University Hospital, Pusan National University School of Medicine, Pusan National University, 602-739, Busan, Republic of Korea  |4 aut 
700 1 |a Kim  |D Hyun  |u Department of Surgery, Biomedical Research Institute, Pusan National University Hospital, Pusan National University School of Medicine, Pusan National University, 602-739, Busan, Republic of Korea  |4 aut 
700 1 |a Jo  |D Hong  |u Department of Surgery, Biomedical Research Institute, Pusan National University Hospital, Pusan National University School of Medicine, Pusan National University, 602-739, Busan, Republic of Korea  |4 aut 
700 1 |a Kim  |D Tae  |u Department of Radiology, Yangsan Pusan National University Hospital, Pusan National University School of Medicine, Pusan National University, 626-770, Yangsan, Republic of Korea  |4 aut 
773 0 |t Abdominal Imaging  |d Springer US; http://www.springer-ny.com  |g 40/3(2015-03-01), 643-662  |x 0942-8925  |q 40:3<643  |1 2015  |2 40  |o 261 
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950 |B NATIONALLICENCE  |P 700  |E 1-  |a Lee  |D Nam  |u Department of Radiology, Biomedical Research Institute, Pusan National University Hospital, Pusan National University School of Medicine, Pusan National University, #179, Gudeok-Ro, Seo-Gu, 602-739, Busan, Republic of Korea  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Kim  |D Suk  |u Department of Radiology, Biomedical Research Institute, Pusan National University Hospital, Pusan National University School of Medicine, Pusan National University, #179, Gudeok-Ro, Seo-Gu, 602-739, Busan, Republic of Korea  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Kim  |D Dong  |u Department of Internal Medicine, Biomedical Research Institute, Pusan National University Hospital, Pusan National University School of Medicine, Pusan National University, 602-739, Busan, Republic of Korea  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Seo  |D Hyung  |u Department of Surgery, Biomedical Research Institute, Pusan National University Hospital, Pusan National University School of Medicine, Pusan National University, 602-739, Busan, Republic of Korea  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Kim  |D Hyun  |u Department of Surgery, Biomedical Research Institute, Pusan National University Hospital, Pusan National University School of Medicine, Pusan National University, 602-739, Busan, Republic of Korea  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Jo  |D Hong  |u Department of Surgery, Biomedical Research Institute, Pusan National University Hospital, Pusan National University School of Medicine, Pusan National University, 602-739, Busan, Republic of Korea  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Kim  |D Tae  |u Department of Radiology, Yangsan Pusan National University Hospital, Pusan National University School of Medicine, Pusan National University, 626-770, Yangsan, Republic of Korea  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Abdominal Imaging  |d Springer US; http://www.springer-ny.com  |g 40/3(2015-03-01), 643-662  |x 0942-8925  |q 40:3<643  |1 2015  |2 40  |o 261