1
|
Keller S, Venkatesh SK, Avanesov M, Weinrich JM, Zenouzi R, Schramm C, Adam G, Yamamura J. Gadolinium-based relative contrast enhancement in primary sclerosing cholangitis: additional benefit for clinicians? Clin Radiol 2018; 73:677.e1-677.e6. [PMID: 29576223 DOI: 10.1016/j.crad.2018.02.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Accepted: 02/13/2018] [Indexed: 02/06/2023]
Abstract
AIM To evaluate the benefit of extracellular gadolinium-based contrast agent (GBCA) enhanced magnetic resonance imaging (MRI) in addition to conventional non-enhanced T2-weighted imaging (WI) for quantification of inflammatory or fibrotic alterations in the liver parenchyma of patients with primary sclerosing cholangitis (PSC). MATERIAL AND METHODS MRI (3 T) examinations were reviewed retrospectively by two radiologists in 27 PSC patients (age 42.9±15.6 years), and 19 controls. Regions of interest (ROIs) were drawn onto T2 hyperintense and T2 isointense areas and copied to section position matched non-enhanced and delayed-phase contrast-enhanced T1WI. Signal intensities (SI) obtained from ROIs of the multiphase T1WI were used to calculate relative liver enhancement (RLE). The interobserver agreement of RLE and quantified T2 signal was calculated using Bland-Altman analysis. RLE assessed for both T2 hyperintense (RLEhyper) and T2 isointense (RLEiso) areas were compared in patients and controls (RLEhealthy). RESULTS The interobserver agreement of RLE in affected hyperintense areas (bias -0.77, limits of agreement -51.7 to 50.1) was superior to the quantification of T2 signal only in these areas (bias -3.35, limits of agreement -162.4 to 155.7). The RLEhyper (86.2±9.7%) was higher than the RLEiso (59.8±6.2%, p=0.03) and the RLEhealthy (53.2±2.7%, p=0.002). The mean RLEiso was not significantly different from the RLEhealthy (p=0.3). CONCLUSION The extracellular gadolinium-based RLE of T2 hyperintense areas could be a useful add-on for routine follow up MRI in the detection of early inflammatory changes, possibly preceding formation of fibrotic scarring in PSC patients, if validated in larger cohorts.
Collapse
Affiliation(s)
- S Keller
- University Medical Center Hamburg-Eppendorf (UKE), Department of Diagnostic and Interventional Radiology and Nuclear Medicine, Hamburg, Germany
| | - S K Venkatesh
- Department of Radiology, Mayo Clinic Rochester, Rochester, MN, USA
| | - M Avanesov
- University Medical Center Hamburg-Eppendorf (UKE), Department of Diagnostic and Interventional Radiology and Nuclear Medicine, Hamburg, Germany
| | - J M Weinrich
- University Medical Center Hamburg-Eppendorf (UKE), Department of Diagnostic and Interventional Radiology and Nuclear Medicine, Hamburg, Germany
| | - R Zenouzi
- University Medical Center Hamburg-Eppendorf (UKE), Department of Internal Medicine, Hamburg, Germany
| | - C Schramm
- University Medical Center Hamburg-Eppendorf (UKE), Department of Internal Medicine, Hamburg, Germany
| | - G Adam
- University Medical Center Hamburg-Eppendorf (UKE), Department of Diagnostic and Interventional Radiology and Nuclear Medicine, Hamburg, Germany
| | - J Yamamura
- University Medical Center Hamburg-Eppendorf (UKE), Department of Diagnostic and Interventional Radiology and Nuclear Medicine, Hamburg, Germany.
| |
Collapse
|
2
|
Venkatanarasimha N, Damodharan K, Gogna A, Leong S, Too CW, Patel A, Tay KH, Tan BS, Lo R, Irani F. Diagnosis and Management of Complications from Percutaneous Biliary Tract Interventions. Radiographics 2017; 37:665-680. [PMID: 28287940 DOI: 10.1148/rg.2017160159] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Complications related to percutaneous biliary tract interventions (PBTIs) can range from access site discomfort to life-threatening vascular complications. These complications are relatively uncommon, and most of them are self-limiting. However, major complications for which an increased level of patient care and/or a prolonged hospital stay are required and that may lead to death-albeit rarely-can occur. Some of the most common complications related to PBTI include pain, infection, bile leakage, and catheter blockage. These conditions can be easily recognized by using the patient's clinical history and laboratory examination results. However, the more uncommon complications, such as life-threatening hemobilia, acute pancreatitis, and catheter and stent fractures, may have nonspecific clinical manifestations, and the underlying pathologic condition may be found only when it is being sought specifically. It is important that diagnostic and interventional radiologists be aware of the wide spectrum of PBTI-related complications, as early recognition and treatment may prevent catastrophic situations. In addition, knowledge of the different treatment options is essential for guidance in interventional radiology procedures such as transarterial control of hemobilia, imaging-guided direct percutaneous embolization of pseudoaneurysms, and percutaneous treatment of catheter- and stent-related complications such as fractures. The authors review a wide spectrum of complications associated with PBTI and the percutaneous management of these conditions. They also highlight valuable lessons learned from morbidity and mortality rounds at a high-volume tertiary care center. ©RSNA, 2017.
Collapse
Affiliation(s)
- Nanda Venkatanarasimha
- From the Interventional Radiology Center, Department of Diagnostic Radiology, Singapore General Hospital, Outram Road, Singapore
| | - Karthikeyan Damodharan
- From the Interventional Radiology Center, Department of Diagnostic Radiology, Singapore General Hospital, Outram Road, Singapore
| | - Apoorva Gogna
- From the Interventional Radiology Center, Department of Diagnostic Radiology, Singapore General Hospital, Outram Road, Singapore
| | - Sum Leong
- From the Interventional Radiology Center, Department of Diagnostic Radiology, Singapore General Hospital, Outram Road, Singapore
| | - Chow Wei Too
- From the Interventional Radiology Center, Department of Diagnostic Radiology, Singapore General Hospital, Outram Road, Singapore
| | - Ankur Patel
- From the Interventional Radiology Center, Department of Diagnostic Radiology, Singapore General Hospital, Outram Road, Singapore
| | - Kiang Hiong Tay
- From the Interventional Radiology Center, Department of Diagnostic Radiology, Singapore General Hospital, Outram Road, Singapore
| | - Bien Soo Tan
- From the Interventional Radiology Center, Department of Diagnostic Radiology, Singapore General Hospital, Outram Road, Singapore
| | - Richard Lo
- From the Interventional Radiology Center, Department of Diagnostic Radiology, Singapore General Hospital, Outram Road, Singapore
| | - Farah Irani
- From the Interventional Radiology Center, Department of Diagnostic Radiology, Singapore General Hospital, Outram Road, Singapore
| |
Collapse
|
3
|
Fábrega-Foster K, Ghasabeh MA, Pawlik TM, Kamel IR. Multimodality imaging of intrahepatic cholangiocarcinoma. Hepatobiliary Surg Nutr 2017; 6:67-78. [PMID: 28503554 DOI: 10.21037/hbsn.2016.12.10] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Intrahepatic cholangiocarcinomas account for approximately 20% of cases of cholangiocarcinomas. Three growth patterns or morphologic subtypes exist, including mass-forming, periductal-infiltrating, and intraductal-growth subtypes. Knowledge of these morphologic subtypes and their radiologic appearance aids in timely diagnosis, a key to optimizing patient outcomes. The morphologic variability of intrahepatic cholangiocarcinomas has a direct impact on the diagnostic sensitivity and specificity of various diagnostic imaging modalities, including ultrasound (US), computed tomography (CT), magnetic resonance imaging (MRI)/magnetic resonance cholangiopancreatography (MRCP), and positron emission tomography (PET). The following review emphasizes optimal imaging technique for each of these modalities and reviews the imaging appearance of each morphologic subtype of intrahepatic cholangiocarcinoma.
Collapse
Affiliation(s)
- Kelly Fábrega-Foster
- The Russell H. Morgan Department of Radiology and Radiological Sciences Johns Hopkins University, 600 North Wolfe Street, MRI 143, Baltimore, Maryland, USA
| | - Mounes Aliyari Ghasabeh
- The Russell H. Morgan Department of Radiology and Radiological Sciences Johns Hopkins University, 600 North Wolfe Street, MRI 143, Baltimore, Maryland, USA
| | - Timothy M Pawlik
- Department of Surgery, The Urban Meyer III and Shelley Meyer Chair in Cancer Research, The Ohio State University Wexner Medical Center, USA
| | - Ihab R Kamel
- The Russell H. Morgan Department of Radiology and Radiological Sciences Johns Hopkins University, 600 North Wolfe Street, MRI 143, Baltimore, Maryland, USA
| |
Collapse
|
4
|
Mamone G, Marrone G, Caruso S, Carollo V, Gentile G, Crino' F, Milazzo M, Luca A. Intrahepatic mass-forming cholangiocarcinoma: enhancement pattern on Gd-BOPTA-MRI with emphasis of hepatobiliary phase. ACTA ACUST UNITED AC 2016; 40:2313-22. [PMID: 25962708 DOI: 10.1007/s00261-015-0445-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
PURPOSE To describe the Gd-BOPTA MRI findings of intrahepatic mass-forming type cholangiocarcinomas (IMCs), with emphasis on the hepatobiliary phase (HBP). METHODS We reviewed retrospectively 29 IMC patients who underwent Gd-BOPTA-MRI between June, 2004 and June, 2014. Images were acquired prior to, and after, administration of 15-20 mL of Gd-BOPTA in the dynamic phase (arterial phase, portal venous phase, and 3-5 min phase), 10-15-min late phase, and 2-3 h HBP phase. RESULTS In the dynamic phase, 27 (93%) lesions showed a peripheral rim-like enhancement in the arterial and portal venous phases, followed by progressive filling-in on the delayed images. In 14 (56%) cases, a hypointense peripheral rim was identified in the 10-15-min late phase, delineating a target pattern. In the HBP, the cholangiocarcinoma showed a diffuse, mainly central and inhomogeneous enhancement (cloud of enhancement) in 28 (96%) patients; in 23 (79%) cases, there was an association between cloud appearance and a hypointense peripheral rim, showing a target pattern. CONCLUSIONS Gd-BOPTA MRI pattern of IMC on dynamic study is similar to that of conventional extracellular agents, that is peripheral enhancement with progressive and concentric filling of contrast material on delayed phases. At 10-15 min delayed phases, IMC shows often a peripheral hypointense rim consistent with a target appearance. In the HBP, due to progressive central enhancement (cloud) and peripheral hypointense rim, an higher number of tumors show a target appearance; this pattern is not specific and would also be expected to be seen in metastases from adenocarcinoma.
Collapse
Affiliation(s)
- Giuseppe Mamone
- Mediterranean Institute for Transplantation and Advanced Specialized Therapies (ISMETT) - University of Pittsburgh Medical Center (UPMC), Via Ernesto Tricomi 5, 90127, Palermo, Italy.
| | - Gianluca Marrone
- Mediterranean Institute for Transplantation and Advanced Specialized Therapies (ISMETT) - University of Pittsburgh Medical Center (UPMC), Via Ernesto Tricomi 5, 90127, Palermo, Italy
| | - Settimo Caruso
- Mediterranean Institute for Transplantation and Advanced Specialized Therapies (ISMETT) - University of Pittsburgh Medical Center (UPMC), Via Ernesto Tricomi 5, 90127, Palermo, Italy
| | - Vincenzo Carollo
- Mediterranean Institute for Transplantation and Advanced Specialized Therapies (ISMETT) - University of Pittsburgh Medical Center (UPMC), Via Ernesto Tricomi 5, 90127, Palermo, Italy
| | - Giovanni Gentile
- Mediterranean Institute for Transplantation and Advanced Specialized Therapies (ISMETT) - University of Pittsburgh Medical Center (UPMC), Via Ernesto Tricomi 5, 90127, Palermo, Italy
| | - Francesca Crino'
- Mediterranean Institute for Transplantation and Advanced Specialized Therapies (ISMETT) - University of Pittsburgh Medical Center (UPMC), Via Ernesto Tricomi 5, 90127, Palermo, Italy
| | - Mariapina Milazzo
- Mediterranean Institute for Transplantation and Advanced Specialized Therapies (ISMETT) - University of Pittsburgh Medical Center (UPMC), Via Ernesto Tricomi 5, 90127, Palermo, Italy
| | - Angelo Luca
- Mediterranean Institute for Transplantation and Advanced Specialized Therapies (ISMETT) - University of Pittsburgh Medical Center (UPMC), Via Ernesto Tricomi 5, 90127, Palermo, Italy
| |
Collapse
|
5
|
Hanpanich P, Pinlaor S, Charoensuk L, Yongvanit P, Chamgramol Y, Pairojkul C, Mairiang E. MRI and (1)H MRS findings of hepatobilary changes and cholangiocarcinoma development in hamsters infected with Opisthorchis viverrini and treated with N-nitrosodimethylamine. Magn Reson Imaging 2015; 33:1146-1155. [PMID: 26117689 DOI: 10.1016/j.mri.2015.06.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Revised: 04/23/2015] [Accepted: 06/21/2015] [Indexed: 02/07/2023]
Abstract
3 T MRI and (1)H MRS were useful for quantitative investigation of the serial development of hepatobiliary changes in Opisthorchis viverrini infection in hamsters, and the differential diagnosis of cholangiocacinoma (CCA) development from bile duct changes and normal condition is unclear. In this study, we investigated the serial development of hepatobiliary changes and CCAgenesis in O. viverrini-infected and N-nitrosodimethylamine (NDMA) treated hamsters (ON group) using 3 T MRI and (1)H MRS and the results were compared with those either in the O. viverrini-infected group (OV group) and uninfected normal controls. In the ON group, CCAs were first found at 9 weeks post-infection, with sizes of ~2 mm. The typical MR signal characteristics of CCA were hypo- and occasionally isointensity signal on T1-weighted images, and mild-moderate to hyper-intensity signal on T2-weighted images compared to the liver parenchyma. T2-weighted images with fat suppression revealed dilatation of the intra- and extrahepatic bile ducts, and often defined the anatomical level of biliary obstruction, cystic lesions, liver abscesses, and CCA which was starting seen of these noticeable abnormalities at 5 weeks onwards. The results of fibrosis grading using MR images showed a positive correlation (r=0.90, P<0.038 by Spearman's rank correlation test) with those of the histopathological grading. In addition, 3.0 T (1)H MRS showed elevated choline and decreased lipids levels in the liver tissues of the ON group. In conclusion, MRI and (1)H MRS are useful for the quantitative investigation of the serial development of hepatobilary changes and CCA in hamsters, and are potentially useful as early diagnostic tools for CCA.
Collapse
Affiliation(s)
- Petcharakorn Hanpanich
- Department of Radiology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Liver Fluke and Cholangiocarcinoma Research Center, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.
| | - Somchai Pinlaor
- Liver Fluke and Cholangiocarcinoma Research Center, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Lakhanawan Charoensuk
- Liver Fluke and Cholangiocarcinoma Research Center, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Puangrat Yongvanit
- Liver Fluke and Cholangiocarcinoma Research Center, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Yaovalux Chamgramol
- Liver Fluke and Cholangiocarcinoma Research Center, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Department of Pathology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Chawalit Pairojkul
- Liver Fluke and Cholangiocarcinoma Research Center, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Department of Pathology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Eimorn Mairiang
- Department of Radiology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| |
Collapse
|
6
|
Ringe KI, Wacker F. Radiological diagnosis in cholangiocarcinoma: Application of computed tomography, magnetic resonance imaging, and positron emission tomography. Best Pract Res Clin Gastroenterol 2015; 29:253-65. [PMID: 25966426 DOI: 10.1016/j.bpg.2015.02.004] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Accepted: 02/07/2015] [Indexed: 01/31/2023]
Abstract
The purpose of radiological imaging in patients with suspected or known cholangiocarcinoma (CCA) is tumour detection, lesion characterization and assessment of resectability. Different imaging modalities are implemented complementary in the diagnostic work-up. Non-invasive imaging should be performed prior to invasive biliary procedures in order to avoid false positive results. For assessment of intraparenchymal tumour extension and evaluation of biliary and vascular invasion, MRI including MRCP and CT are the primarily used imaging modalities. The role of PET remains controversial with few studies showing benefit with the detection of unexpected metastatic spread, the differentiation between benign and malignant biliary strictures, and for discriminating post therapeutic changes and recurrent CCA.
Collapse
Affiliation(s)
- Kristina I Ringe
- Hannover Medical School, Department of Diagnostic and Interventional Radiology, Carl-Neuberg Str. 1, 30625 Hannover, Germany.
| | - Frank Wacker
- Hannover Medical School, Department of Diagnostic and Interventional Radiology, Carl-Neuberg Str. 1, 30625 Hannover, Germany
| |
Collapse
|
7
|
Feng ST, Wu L, Cai H, Chan T, Luo Y, Dong Z, Zheng K, Li ZP. Cholangiocarcinoma: spectrum of appearances on Gd-EOB-DTPA-enhanced MR imaging and the effect of biliary function on signal intensity. BMC Cancer 2015; 15:38. [PMID: 25655565 PMCID: PMC4324426 DOI: 10.1186/s12885-015-1039-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2014] [Accepted: 01/23/2015] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND To describe the Gd-EOB-DTPA-enhanced MRI appearances of cholangiocarcinoma, and evaluate the relative signal intensities (RSIs) changes of major abdominal organs, and investigate the effect of total bilirubin (TB) levels on the RSI. METHODS 25 patients with pathologically-proven cholangiocarcinoma underwent Gd-EOB-DTPA-enhanced MRI. The visualization of the biliary system during biliary phase (BP) was observed. RSIs of the abdominal aorta (A), portal vein (V), liver (L), and spleen (S) were measured. RESULTS On hepatocellular phase (HP), exophytic tumors (n =10) and infiltrative tumors (n =10) were hypointense, polypoid tumors (n = 2) were hypointense, and combined type tumors (n = 3) had mixed appearances. While patients with normal TB levels (≤22 μmol/L, n = 12) had clear visualization of the biliary tree during BP, those with elevated TB levels (>22 μmol/L, n = 13) had obscured or no visualization. In addition, patients with normal TB levels had higher RSIA, RSIV and RSIS than those with elevated TB levels on all dynamic phases (P <0.001), and lower RSIA, RSIV and RSIS on HP and BP (P <0.001). Patients with normal TB levels had higher RSIL than those with elevated TB levels on all phases (P <0.001). CONCLUSIONS RSIs of major abdominal organs reflected underlying biliary function. Cholangiocarcinoma patients with elevated TB levels had delayed excretion of Gd-EOB-DTPA compared with patients with normal TB levels.
Collapse
Affiliation(s)
- Shi-Ting Feng
- Department of Radiology, The First Affiliated Hospital, Sun Yat-Sen University, 58th, The Second Zhongshan Road, Guangzhou, Guangdong, 510080, China.
| | - Ling Wu
- Department of Radiology, The First Affiliated Hospital, Sun Yat-Sen University, 58th, The Second Zhongshan Road, Guangzhou, Guangdong, 510080, China.
| | - Huasong Cai
- Department of Radiology, The First Affiliated Hospital, Sun Yat-Sen University, 58th, The Second Zhongshan Road, Guangzhou, Guangdong, 510080, China.
| | - Tao Chan
- Medical Imaging Department, Union Hospital, Hong Kong, 18 Fu Kin Street, Tai Wai, Shatin, NT, Hong Kong.
| | - Yanji Luo
- Department of Radiology, The First Affiliated Hospital, Sun Yat-Sen University, 58th, The Second Zhongshan Road, Guangzhou, Guangdong, 510080, China.
| | - Zhi Dong
- Department of Radiology, The First Affiliated Hospital, Sun Yat-Sen University, 58th, The Second Zhongshan Road, Guangzhou, Guangdong, 510080, China.
| | - Keguo Zheng
- Department of Radiology, The First Affiliated Hospital, Sun Yat-Sen University, 58th, The Second Zhongshan Road, Guangzhou, Guangdong, 510080, China.
| | - Zi-Ping Li
- Department of Radiology, The First Affiliated Hospital, Sun Yat-Sen University, 58th, The Second Zhongshan Road, Guangzhou, Guangdong, 510080, China.
| |
Collapse
|
8
|
Jhaveri KS, Hosseini-Nik H. MRI of cholangiocarcinoma. J Magn Reson Imaging 2014; 42:1165-79. [PMID: 25447417 DOI: 10.1002/jmri.24810] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Accepted: 10/21/2014] [Indexed: 12/12/2022] Open
Abstract
Cholangiocarcinomas are the second most common primary hepatobiliary tumors after hepatocellular carcinomas. They can be categorized either based on their location (intrahepatic/perihilar/extrahepatic distal) or their growth characteristics (mass-forming/periductal-infiltrating/intraductal) because they exhibit varied presentations and outcomes based on their location and or pattern of growth. The increased risk of cholangiocarcinoma in PSC necessitates close surveillance of these patients by means of imaging and laboratory measures; and because currently surgical resection is the only effective treatment for cholangiocarcinoma, the need for accurate pre-operative staging and assessment of resectability has emphasized the role of high quality imaging in management. Today magnetic resonance imaging (MRI) is the modality of choice for detection, pre-operative staging and surveillance of cholangiocarcinoma.
Collapse
Affiliation(s)
- Kartik S Jhaveri
- Department of Medical Imaging, University of Toronto, Toronto, Ontario, Canada.,Joint Department of Medical Imaging, University Health Network, Mount Sinai Hospital, and Women's College Hospital, Toronto, Ontario, Canada
| | - Hooman Hosseini-Nik
- Joint Department of Medical Imaging, University Health Network, Mount Sinai Hospital, and Women's College Hospital, Toronto, Ontario, Canada
| |
Collapse
|
9
|
Primary biliary tract malignancies: MRI spectrum and mimics with histopathological correlation. ACTA ACUST UNITED AC 2014; 40:1520-57. [DOI: 10.1007/s00261-014-0300-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
10
|
Yu XR, Huang WY, Zhang BY, Li HQ, Geng DY. Differentiation of infiltrative cholangiocarcinoma from benign common bile duct stricture using three-dimensional dynamic contrast-enhanced MRI with MRCP. Clin Radiol 2014; 69:567-73. [DOI: 10.1016/j.crad.2014.01.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Revised: 12/26/2013] [Accepted: 01/02/2014] [Indexed: 02/08/2023]
|
11
|
Park HJ, Kim SH, Jang KM, Choi SY, Lee SJ, Choi D. The role of diffusion-weighted MR imaging for differentiating benign from malignant bile duct strictures. Eur Radiol 2014; 24:947-58. [PMID: 24487774 DOI: 10.1007/s00330-014-3097-x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2013] [Revised: 12/30/2013] [Accepted: 01/10/2014] [Indexed: 01/01/2023]
Abstract
OBJECTIVES To assess the added value of diffusion-weighted imaging (DWI) to conventional magnetic resonance imaging (MRI) for differentiating benign from malignant bile duct strictures. METHODS Twenty-seven patients with a benign stricture and 42 patients with a malignant stricture who had undergone gadoxetic acid-enhanced MRI with DWI were enrolled. Qualitative (signal intensity, dynamic enhancement pattern) and quantitative (wall thickness and length) analyses were performed. Two observers independently reviewed a set of conventional MRI and a combined set of conventional MRI and DWI, and receiver operating characteristic (ROC) curve analysis was assessed. RESULTS Benign strictures showed isointensity (18.5-70.4 %) and a similar enhancement pattern (22.2 %) to that of normal bile duct more frequently than malignant strictures (0-40.5 % and 0 %) on conventional MRI (P < 0.05). Malignant strictures (90.5-92.9 %) showed hypervascularity on arterial and portal venous phase images more frequently than benign strictures (37.0-70.4 %) (P < 0.01) On DWI, all malignant strictures showed hyperintensity compared with benign cases (70.4 %) (P < 0.001). Malignant strictures were significantly thicker and longer than benign strictures (P < 0.001). The diagnostic performance of both observers improved significantly after additional review of DWI. CONCLUSIONS Adding DWI to conventional MRI is more helpful for differentiating benign from malignant bile duct strictures than conventional MRI alone. KEY POINTS • Accurate diagnosis and exclusion of benign strictures of bile duct are important. • Diffusion-weighted MRI helps to distinguish benign from malignant bile duct strictures. • DWI plus conventional MRI provides superior diagnostic accuracy to conventional MRI alone.
Collapse
Affiliation(s)
- Hyun Jeong Park
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50, Ilwon-Dong, Kangnam-Ku, Seoul, 135-710, Republic of Korea
| | | | | | | | | | | |
Collapse
|
12
|
Kang Y, Lee JM, Kim SH, Han JK, Choi BI. Intrahepatic mass-forming cholangiocarcinoma: enhancement patterns on gadoxetic acid-enhanced MR images. Radiology 2012; 264:751-60. [PMID: 22798225 DOI: 10.1148/radiol.12112308] [Citation(s) in RCA: 134] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
PURPOSE To evaluate the enhancement patterns of intrahepatic mass-forming cholangiocarcinomas (IMCCs) with emphasis on the hepatobiliary phase (HBP) of gadoxetic acid-enhanced magnetic resonance (MR) imaging. MATERIALS AND METHODS This retrospective study was institutional review board approved, and the requirement for informed consent was waived. Fifty patients (41 men, nine women; mean age, 62.3 years; range, 44-76 years) with IMCC underwent unenhanced and gadoxetic acid-enhanced T1- and T2-weighted MR imaging including dynamic phase and hepatobiliary phase imaging between May 2008 and December 2010. Signal intensity and enhancement patterns of lesions were compared with those of the liver parenchyma in each phase. Conspicuity and margin sharpness of lesions on dynamic phase and HBP images were rated on a 4- or 5-point scale and compared by using the Wilcoxon signed-rank test. Percentage of relative enhancement was compared among pathologic subgroups by using the unpaired Student t test. RESULTS On dynamic phase images, 29 of 48 (60%) lesions showed a thin peripheral rim with centripetal or gradual progression. On HBP images, 48 of 50 (96%) IMCCs were hypointense, and two of 50 (4%) were hyperintense. Subjective ratings of conspicuity and margin sharpness were significantly higher on HBP (median scores, 5 and 4, respectively) (P < .001) than on the dynamic phase (median scores, 4 and 3, respectively) images (P < .001). Additional daughter nodules were found in five patients and intrahepatic metastasis was found in one. Percentage of relative enhancement on HBP images was significantly higher in moderately differentiated (66.4% ± 42.1) than in poorly differentiated (36.84% ± 21.5) tumors (P = .039) and in patients without (59.7% ± 28.8) than in those with (24.9% ± 14.7) (P = .036) lymph node metastasis. CONCLUSION The most prevalent enhancement pattern on gadoxetic acid-enhanced MR images of IMCCs was a thin peripheral rim with internal heterogeneous enhancement during the dynamic phase. HBP images showed increased lesion conspicuity and better delineation of daughter nodules and intrahepatic metastasis, which may aid in the diagnosis of IMCC.
Collapse
Affiliation(s)
- Yusuhn Kang
- Department of Radiology, Seoul National University College of Medicine, 28 Yongon-dong, Chongno-gu, Seoul 110-744, Korea
| | | | | | | | | |
Collapse
|
13
|
Abstract
Gallbladder and biliary system pathologic component is a spectrum of benign and malignant conditions. Standard magnetic resonance imaging techniques when used together with magnetic resonance cholangiopancreatography (MRCP) can evaluate gallbladder and biliary system pathologic conditions. Inflammatory diseases are characterized by thickening and intense mucosal contrast enhancement of the affected bile ducts and or gallbladder wall. Postinflammatory changes can be appreciated on MRCP with short or long segment strictures of the bile ducts. Serial contrast-enhanced images show reactive inflammatory changes in the liver parenchyma. Neoplastic diseases of the gallbladder and the biliary tree are evaluated on T2-weighted fat-suppressed echo train and serial contrast-enhanced images and their obstructive effect can be displayed on MRCP images. In this paper, we will review the spectrum of MRI findings of gallbladder and biliary system pathologic conditions.
Collapse
|
14
|
Rimola J, Forner A, Reig M, Vilana R, de Lope CR, Ayuso C, Bruix J. Cholangiocarcinoma in cirrhosis: absence of contrast washout in delayed phases by magnetic resonance imaging avoids misdiagnosis of hepatocellular carcinoma. Hepatology 2009; 50:791-8. [PMID: 19610049 DOI: 10.1002/hep.23071] [Citation(s) in RCA: 225] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This study assesses the magnetic resonance (MR) features of intrahepatic cholangiocarcinoma (ICC) in patients with cirrhosis with specific analysis of the contrast enhancement pattern. Cholangiocarcinoma may show increased contrast uptake in the arterial phase, and, if washout in the delayed venous phase were to be detected, the noninvasive diagnostic criteria proposed in the American Association for the Study of Liver Diseases guidelines would be refuted. We reviewed the MR findings of 25 patients with cirrhosis with 31 histologically confirmed ICC nodules. Signal intensity on basal T1-weighted and T2-weighted images and characteristics of enhancement after contrast administration on arterial, portal, and delayed phase were registered. Enhancement pattern was defined according to the behavior of the lesions in each phase, and dynamic pattern was described according to the progression of enhancement throughout the different phases. The most frequent pattern displayed by ICC was a progressive contrast uptake (80.6%). Stable contrast enhancement was registered in 19.4%. None of the ICCs showed a washout pattern, a profile that is specific for hepatocellular carcinoma (HCC). The ICC dynamic behavior differed significantly according to tumor size: progressive enhancement pattern was the most frequent (20 of 25 cases) in lesions larger than 20 mm, whereas the stable pattern was mainly identified in nodules smaller than 20 mm. The most characteristic MR contrast pattern in ICC in cirrhosis is a progressive contrast uptake throughout the different phases, whereas contrast washout at delayed phases is not observed. Because stable enhancement pattern without washout also can be registered in small HCC nodules, the evaluation of delayed phase is mandatory for a proper nodule characterization. If washout is not registered, a biopsy should be mandatory for diagnosis.
Collapse
Affiliation(s)
- Jordi Rimola
- BCLC Group Radiology Department, Hospital Clínic, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas, Institut d'Investigacions Biomédiques August Pi y Sunyer, University of Barcelona, Barcelona, Spain.
| | | | | | | | | | | | | |
Collapse
|
15
|
Sainani NI, Catalano OA, Holalkere NS, Zhu AX, Hahn PF, Sahani DV. Cholangiocarcinoma: current and novel imaging techniques. Radiographics 2008; 28:1263-87. [PMID: 18794305 DOI: 10.1148/rg.285075183] [Citation(s) in RCA: 112] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The radiologic manifestations of cholangiocarcinomas are extremely diverse, since these tumors vary greatly in location, growth pattern, and histologic type. Familiarity with the imaging manifestations of cholangiocarcinomas is important for accurate detection and characterization of these tumors and assessment of resectability. Advances in imaging techniques have led to the availability of an array of modalities that, used independently or in combination, can aid in the accurate diagnosis and evaluation of cholangiocarcinomas in preparation for advanced surgical procedures and treatment planning. Response to novel targeted therapies can also be assessed with newer imaging tools. Hence, knowledge of current and emerging imaging applications is essential for correct diagnosis and appropriate management of these tumors.
Collapse
Affiliation(s)
- Nisha I Sainani
- Division of Abdominal Imaging and Interventional Radiology, Massachusetts General Hospital-Harvard Medical School, Boston, MA 02114, USA
| | | | | | | | | | | |
Collapse
|
16
|
Ba-Ssalamah A, Uffmann M, Saini S, Bastati N, Herold C, Schima W. Clinical value of MRI liver-specific contrast agents: a tailored examination for a confident non-invasive diagnosis of focal liver lesions. Eur Radiol 2008; 19:342-57. [DOI: 10.1007/s00330-008-1172-x] [Citation(s) in RCA: 120] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2008] [Revised: 07/13/2008] [Accepted: 08/11/2008] [Indexed: 12/27/2022]
|
17
|
Morin SH, Lim AK, Cobbold JF, Taylor-Robinson SD. Use of second generation contrast-enhanced ultrasound in the assessment of focal liver lesions. World J Gastroenterol 2008. [PMID: 18023084 DOI: 10.3748/wjg.13.5963] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Ultrasound (US) is often the first imaging modality employed in patients with suspected focal liver lesions. The role of US in the characterisation of focal liver lesions has been transformed with the introduction of specific contrast media and the development of specialized imaging techniques. Ultrasound now can fully characterise the enhancement pattern of hepatic lesions, similar to that achieved with contrast enhanced multiphasic computed tomography (CT) and magnetic resonance imaging (MRI). US contrast agents are safe, well-tolerated and have very few contraindications. Furthermore, real-time evaluation of the vascularity of focal liver lesions has become possible with the use of the newer microbubble contrast agents. This article reviews the enhancement pattern of the most frequent liver lesions seen, using the second generation US contrast media. The common pitfalls for each type of lesion are discussed. The recent developments in US contrast media and specific imaging techniques have been a major advance and this technique, in view of the intrinsic advantages of US, will undoubtedly gain popularity in the years to come.
Collapse
|
18
|
Morin SH, Lim AK, Cobbold JF, Taylor-Robinson SD. Use of second generation contrast-enhanced ultrasound in the assessment of focal liver lesions. World J Gastroenterol 2008; 13:5963-70. [PMID: 18023084 PMCID: PMC4250875 DOI: 10.3748/wjg.v13.45.5963] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Ultrasound (US) is often the first imaging modality employed in patients with suspected focal liver lesions. The role of US in the characterisation of focal liver lesions has been transformed with the introduction of specific contrast media and the development of specialized imaging techniques. Ultrasound now can fully characterise the enhancement pattern of hepatic lesions, similar to that achieved with contrast enhanced multiphasic computed tomography (CT) and magnetic resonance imaging (MRI). US contrast agents are safe, well-tolerated and have very few contraindications. Furthermore, real-time evaluation of the vascularity of focal liver lesions has become possible with the use of the newer microbubble contrast agents. This article reviews the enhancement pattern of the most frequent liver lesions seen, using the second generation US contrast media. The common pitfalls for each type of lesion are discussed. The recent developments in US contrast media and specific imaging techniques have been a major advance and this technique, in view of the intrinsic advantages of US, will undoubtedly gain popularity in the years to come.
Collapse
|
19
|
Fat-Suppressed Dynamic and Delayed Gadolinium-Enhanced Volumetric Interpolated Breath-hold Magnetic Resonance Imaging of Cholangiocarcinoma. J Comput Assist Tomogr 2008; 32:178-84. [DOI: 10.1097/rct.0b013e31806bef8e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
20
|
Morin SH, Lim AK, Cobbold JF, Taylor-Robinson SD. Use of second generation contrast-enhanced ultrasound in the assessment of focal liver lesions. World J Gastroenterol 2007. [PMID: 18023084 DOI: dx.doi.org/10.3748/wjg.13.5963] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Ultrasound (US) is often the first imaging modality employed in patients with suspected focal liver lesions. The role of US in the characterisation of focal liver lesions has been transformed with the introduction of specific contrast media and the development of specialized imaging techniques. Ultrasound now can fully characterise the enhancement pattern of hepatic lesions, similar to that achieved with contrast enhanced multiphasic computed tomography (CT) and magnetic resonance imaging (MRI). US contrast agents are safe, well-tolerated and have very few contraindications. Furthermore, real-time evaluation of the vascularity of focal liver lesions has become possible with the use of the newer microbubble contrast agents. This article reviews the enhancement pattern of the most frequent liver lesions seen, using the second generation US contrast media. The common pitfalls for each type of lesion are discussed. The recent developments in US contrast media and specific imaging techniques have been a major advance and this technique, in view of the intrinsic advantages of US, will undoubtedly gain popularity in the years to come.
Collapse
|
21
|
Ba-Ssalamah A, Fakhrai N, Matzek WK, Herneth AM, Stadler A, Bastati N, Herold CJ, Schima W. Magnetic resonance imaging of liver malignancies. Top Magn Reson Imaging 2007; 18:445-455. [PMID: 18303402 DOI: 10.1097/rmr.0b013e3181614374] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The histological structure of the liver is complex, consisting of hepatocytes, biliary epithelium, and mesenchymal cells. From this large variety of cells, a broad spectrum of benign and malignant liver lesions in originate. An accurate diagnosis of these lesions is mandatory for choosing an appropriate therapeutic approach. With the recent developments in hardware and software, magnetic resonance imaging (MRI) has emerged as the method of choice in the diagnostic workup of focal liver lesions, in particular in the pretherapeutic stage. The introduction of high-field MRI at 3.0 T in the routine workup and the selective use of liver-specific contrast agents, including hepatobiliary and reticuloendothelial agents, have also strengthened the role of MRI in liver imaging. In this overview article, we will review the recent developments in 3.0-T MRI and MRI contrast agents in the diagnostic workup of the most common malignant liver tumors.
Collapse
Affiliation(s)
- Ahmed Ba-Ssalamah
- Department of Radiology, Medical University of Vienna, Vienna, Austria.
| | | | | | | | | | | | | | | |
Collapse
|
22
|
Kim JY, Lee JM, Han JK, Kim SH, Lee JY, Choi JY, Kim SJ, Kim HJ, Kim KH, Choi BI. Contrast-enhanced MRI combined with MR cholangiopancreatography for the evaluation of patients with biliary strictures: differentiation of malignant from benign bile duct strictures. J Magn Reson Imaging 2007; 26:304-12. [PMID: 17623893 DOI: 10.1002/jmri.20973] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
PURPOSE To determine imaging criteria for the combined use of contrast-enhanced (CE)-MRI and MR cholangiopancreatography (MRCP) to differentiate malignant from benign biliary strictures. MATERIALS AND METHODS A total of 44 patients with biliary stricture who had undergone unenhanced, MRCP, and dynamic MRI were identified from radiological and surgical databases. Two radiologists analyzed MR features for asymmetry, luminal irregularity, abrupt narrowing, outer margin, signal intensity (SI) on T2-weighted (T2W) images, and hyperenhancement relative to liver parenchyma during portal phase. The wall thickness and length of the narrowed segment were measured. MR findings relevant as predictors were identified using a Chi-square or Fisher's exact test and the odds ratio (OR). RESULTS The presence of hyperenhancement relative to liver parenchyma, length > 12 mm, wall thickness > 3 mm, indistinct outer margin, luminal irregularity, and asymmetry of strictured bile duct were significant factors for malignancy (P < 0.05). Malignant strictures were significantly thicker (5.0 +/- 2.0 mm) and longer (27.0 +/- 13.6 mm) than benign strictures. When any three or more of these six criteria were used in combination, we could identify 100% of malignant strictures and 87.0% of benign strictures. CONCLUSION The combined use of CE-MRI and MRCP helped to define the criteria for differentiating malignant from benign biliary strictures in our data.
Collapse
Affiliation(s)
- Ji Yang Kim
- Department of Radiology and Institute of Radiation Medicine, Seoul National University College of Medicine, Seoul, Korea
| | | | | | | | | | | | | | | | | | | |
Collapse
|
23
|
Yu JS, Park C, Kim JH, Chung JJ, Kim KW. Inflammatory myofibroblastic tumors in the liver: MRI of two immunohistochemically-verified cases. J Magn Reson Imaging 2007; 26:418-21. [PMID: 17623877 DOI: 10.1002/jmri.21023] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
In immunohistochemically-proven hepatic inflammatory myofibroblastic tumors, MRI revealed layered patterns of contrast enhancement during dynamic imaging, consisting of outer hypovascular rind and inner hypervascular stroma and mimicking the imaging features of pyogenic organized abscess with deficient central necrosis in four lesions in two patients. For the outer hypovascular rind, T2-weighted images showed hyperintensity, suggesting immature fibrosis corresponding to the area of arterial hypovascularity and delayed contrast enhancement. The patients' favorable clinical course and imaging findings reflected the benign nature of these lesions, from an infectious origin, despite the phenotypic expression of myofibroblastic proliferation in the hypervascular stroma containing chronic inflammatory cells.
Collapse
Affiliation(s)
- Jeong-Sik Yu
- Department of Diagnostic Radiology, Yonsei University College of Medicine, YongDong Severance Hospital, Seoul, Republic of Korea.
| | | | | | | | | |
Collapse
|
24
|
Vogl TJ, Schwarz WO, Heller M, Herzog C, Zangos S, Hintze RE, Neuhaus P, Hammerstingl RM. Staging of Klatskin tumours (hilar cholangiocarcinomas): comparison of MR cholangiography, MR imaging, and endoscopic retrograde cholangiography. Eur Radiol 2006; 16:2317-25. [PMID: 16622690 DOI: 10.1007/s00330-005-0139-4] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2005] [Revised: 11/25/2005] [Accepted: 12/16/2005] [Indexed: 12/11/2022]
Abstract
The aim of the study was to compare prospectively magnetic resonance cholangiography (MRC) and magnetic resonance imaging (MRI) with endoscopic retrograde cholangiography (ERC) in the diagnosis and staging of Klatskin tumours of the biliary tree (hilar cholangiocarcinomas). Forty-six patients with suspected Klatskin tumours of the biliary tract underwent MRI and heavily T2-weighted, non-breathhold, respiratory-triggered fast spin-echo MRC. Forty-two patients underwent ERC within 24 h; in four patients, ERC was not feasible, and percutaneous trans-hepatic cholangiography (PTC) was carried out instead. Two independent investigators evaluated imaging results for the presence of tumour, bile duct dilatation, and stenosis. Clinical and histopathological correlation revealed Klatskin tumours in 33 patients. MRI revealed a slightly hyperintense signal of infiltrated bile ducts in T2-weighted fast spin-echo sequences. The malignant lesion was regularly visualized as a hypointense area in T1-weighted gradient-echo sequences with substantial contrast enhancement along the involved bile duct walls. MRC revealed the location and extension of the tumour in 31 of 33 cases correctly (sensitivity 94%, specificity 100%, diagnostic accuracy 95%). In 27 of 31 cases, ERC enabled accurate staging and diagnosis of Klatskin tumours with a sensitivity of 87%. ERC and PTC combined yielded a sensitivity of 84% and a specificity of 97%. Tumours were grouped according to the Bismuth classification, with MRC allowing correct identification of type I tumour in seven patients, type II tumour in four patients, type III tumour in 12 patients, and type IV tumour in ten patients. MRC provided superior visualization of completely obstructed peripheral systems. MRC in combination with MRI is a reliable non-invasive diagnostic method for the pre-therapeutic staging of Klatskin tumours.
Collapse
Affiliation(s)
- Thomas J Vogl
- Department of Diagnostic and Interventional Radiology, Johann Wolfgang Goethe University of Frankfurt am Main, Theodor-Stern-Kai 7, 60590, Frankfurt am Main, Germany
| | | | | | | | | | | | | | | |
Collapse
|
25
|
Abstract
MR imaging is an established technique for the diagnosis of a spectrum of biliary and gallbladder pathologies and continues to improve with the advent of technologic advances, including new contrast agents and new sequences that are capable of improving upon the contrast resolution and signal-to-noise that are afforded by conventional MR imaging. These improvements already have shown promise for the increasing role of MRC as the initial modality in assessing living liver donors and evaluating post-operative hepato-biliary complications. Improved spatial resolution and the added functional or physiologic information afforded by MR imaging promise ever expanding clinical applicability and usefulness.
Collapse
Affiliation(s)
- Samantha L Heller
- Department of Radiology, New York University Medical Center, 530 First Avenue, New York, NY 10016, USA
| | | |
Collapse
|
26
|
Abstract
The liver is a common site for various benign and malignant focal lesions. The initial modality for assessing liver lesions is ultrasound or CT. MRI with its superior soft tissue contrast offers multiple advantages over other imaging modalities. Contrast agents have been developed that increase the detection rate and provide more specific information in comparison to unenhanced techniques. In the mean time three classes are available for MR imaging of the liver: extracellular gadolinium chelates, hepatobiliary and reticulo-endothelia, superparamagnetic agents. We describe in this review the most common focal lesions, their diagnostic possibilities, and the imaging protocols. Clinical use of these contrast agents facilitates detection and differential diagnosis of focal liver lesions that may help to avoid invasive procedures such as biopsy for lesion characterization.
Collapse
Affiliation(s)
- A Ba-Ssalamah
- Universitätsklinik für Radiodiagnostik, Medizinische Universität, Wien.
| | | | | | | | | | | | | |
Collapse
|
27
|
Macchi V, Floreani A, Marchesi P, Pasini R, Zuliani M, Feltrin GP, De Caro R, Miotto D. Imaging of primary sclerosing cholangitis: preliminary results by two new non-invasive techniques. Dig Liver Dis 2004; 36:614-21. [PMID: 15460846 DOI: 10.1016/j.dld.2004.03.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND Magnetic resonance cholangiography is a new technique which has already gained a role in primary sclerosing cholangitis. Computerised tomographic cholangiography is another non-invasive technique which has been used in assessing abnormal biliary tree, but has never been applied to evaluating primary sclerosing cholangitis. AIMS To evaluate the ability of both magnetic resonance cholangiography and computerised tomographic cholangiography to detect bile duct changes in primary sclerosing cholangitis. PATIENTS AND METHODS Magnetic resonance cholangiography and computerised tomographic cholangiography were performed in 16 primary sclerosing cholangitis patients. The computerised tomographic cholangiography data set was transferred to a processing workstation to obtain tridimensional reconstructions. Magnetic resonance cholangiography and computerised tomographic cholangiography images were analysed blind by two radiologists to assess: primary sclerosing cholangitis involvement, quality of imaging and the radiologist's certainty in determining the presence and location of the disease. RESULTS Mean imaging quality was significantly better with computerised tomographic cholangiography compared with magnetic resonance cholangiography. Primary sclerosing cholangitis was identified in 15 cases with computerised tomographic cholangiography and 10 with magnetic resonance cholangiography (P < 0.05). Sensitivity in diagnosing primary sclerosing cholangitis was 94% with computerised tomographic cholangiography versus 63% with magnetic resonance cholangiography. Intrahepatic location was found in 14 cases, definitely present in 10 cases with computerised tomographic cholangiography and five with magnetic resonance cholangiography. Extrahepatic location was found in 13 cases, definitely present in 11 cases with computerised tomographic cholangiography and four with magnetic resonance cholangiography (P < 0.05). Computerised tomographic cholangiography also offered dynamic information about biliary excretion. CONCLUSIONS Computerised tomographic cholangiography enables more accurate detection and location of primary sclerosing cholangitis than magnetic resonance cholangiography. Since computerised tomographic cholangiography offers additional information about biliary excretion, it may be proposed as an integrative technique in the diagnosis and follow-up of patients with primary sclerosing cholangitis.
Collapse
Affiliation(s)
- V Macchi
- Section of Anatomy, Department of Human Anatomy and Physiology, University of Padova, Padua, Italy
| | | | | | | | | | | | | | | |
Collapse
|
28
|
Abstract
HCCa remains an uncommon malignancy, though increasing use of more radical surgery has led to prolonged survival in those patients who undergo curative resection. The extent of these resections suggest that the best results are likely to be obtained in centers with the resources and experience to conduct these operations in a safe fashion. Until major advances in the systemic therapy of HCCa are made, however, the management should focus on optimal preoperative imaging and palliation of jaundice with improvement in quality of life.
Collapse
Affiliation(s)
- Richard J Bold
- Division of Surgical Oncology, Department of Surgery, Cancer Center, School of Medicine, University of California, Davis, 4501 X Street, Room 3010, Sacramento, CA 95817, USA.
| | | |
Collapse
|
29
|
Abstract
Preoperative imaging with MRI/MRA/MRCP is an accurate non-invasive method for staging cholangiocarcinoma, and determining resectability. It provides information regarding tumor size, extent of bile duct involvement, vascular patency, extrahepatic extension, nodal or distant metastases, and the presence of lobar atrophy. MRCP is better for demonstrating bile ducts distal to the stricture, although with ERCP, therapeutic intervention such as stent placement and biopsy can be performed.
Collapse
Affiliation(s)
- Katrina A Vanderveen
- Department of Radiology/MRI B2B311, University of Michigan Hospitals-Ann Arbor, Ann Arbor, MI 48109-0030, USA
| | | |
Collapse
|
30
|
Kim YJ, Yun M, Lee WJ, Kim KS, Lee JD. Usefulness of 18F-FDG PET in intrahepatic cholangiocarcinoma. Eur J Nucl Med Mol Imaging 2003; 30:1467-72. [PMID: 14579085 DOI: 10.1007/s00259-003-1297-8] [Citation(s) in RCA: 147] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2003] [Accepted: 07/04/2003] [Indexed: 02/07/2023]
Abstract
Surgical resection is the only curative treatment strategy for intrahepatic cholangiocarcinoma (CC). Therefore, accurate staging is essential for appropriate management of patients with CC. We assessed the usefulness of 2-[(18)F]fluoro-2-deoxy- d-glucose (FDG) positron emission tomography (PET) in the staging of CC. We undertook a retrospective review of FDG PET images in 21 patients (10 female, 11 male; mean age 57 years) diagnosed with CC. Ten patients had hilar CC and 11, peripheral CC. Patients underwent abdominal magnetic resonance imaging (MRI) ( n=20) and computed tomography (CT) ( n=12) for the evaluation of primary tumours, and chest radiography and whole-body bone scintigraphy for work-up of distant metastases. For semi-quantitative analysis, the maximum voxel standardised uptake value (SUV(max)) was obtained from the primary tumour. All peripheral CCs showed intensely increased FDG uptake, and some demonstrated ring-shaped uptake corresponding to peripheral rim enhancement on CT and/or MRI. In nine of the ten patients, hilar CCs demonstrated increased FDG uptake of a focal nodular or linear branching appearance. The remaining case was false negative on FDG PET. One patient with a false negative result on MRI demonstrated increased uptake on FDG PET. Among the ten hilar CCs, FDG uptake was intense in only two patients and was slightly higher than that of the hepatic parenchyma in the remaining patients. For the detection of lymph node metastasis, FDG PET and CT/MRI were concordant in 16 patients, and discordant in five (FDG PET was positive in three, and CT and MRI in two). FDG PET identified unsuspected distant metastases in four of the 21 patients; all of these patients had peripheral CC. FDG PET is useful in detecting the primary lesion in both hilar and peripheral CC and is of value in discovering unsuspected distant metastases in patients with peripheral CC. FDG PET could be useful in cases of suspected hilar CC with non-confirmatory biopsy and radiological findings.
Collapse
Affiliation(s)
- Young-Jin Kim
- Department of Diagnostic Radiology and Research Institute of Radiological Science, Yonsei University College of Medicine, Seoul, Korea
| | | | | | | | | |
Collapse
|
31
|
Venkataraman S, Semelka RC, Braga L, Danet IM, Woosley JT. Inflammatory myofibroblastic tumor of the hepatobiliary system: report of MR imaging appearance in four patients. Radiology 2003; 227:758-63. [PMID: 12728186 DOI: 10.1148/radiol.2273020572] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The purpose of this report is to describe the magnetic resonance (MR) imaging features of hepatic inflammatory myofibroblastic tumor (IMT). Two observers retrospectively analyzed images from six MR imaging examinations in four consecutive patients. Tumor location, size, extent, morphology, and number; signal intensity on nonenhanced images; enhancement pattern on serial gadolinium-enhanced images; duct wall thickness; and presence of biliary dilatation, vascular invasion, and lymphadenopathy were assessed. MR imaging findings were compared with histologic findings. On MR images, hepatic IMT manifested as a mass-like lesion in two patients and an area of periportal soft-tissue infiltration in three; one patient had both patterns. Because periportal infiltration is a common feature in both IMT and other malignant tumors of the porta hepatis, histologic examination should be considered before diagnosis and treatment.
Collapse
Affiliation(s)
- Shambhavi Venkataraman
- Department of Radiology, University of North Carolina School of Medicine, 101 Manning Dr, 2006 Old Clinic Bldg, CB 7510, Chapel Hill, NC 27599-7510, USA
| | | | | | | | | |
Collapse
|
32
|
Abstract
MR imaging is able to demonstrate and distinguish the full variety of benign and malignant diffuse liver diseases.
Collapse
Affiliation(s)
- Ioana-Maria Danet
- Department of Radiology, University of North Carolina at Chapel Hill, CB# 7510, Chapel Hill, NC 27599-7510, USA
| | | | | |
Collapse
|
33
|
Abstract
Many imaging techniques are available for the evaluation of patients with malignant obstructive jaundice. Ultrasonography, in experienced hands, is valuable for evaluating the local extent of the disease, but its usefulness for staging distant metastases is limited. When used properly, CT and MR imaging can provide valuable information about the extent of local tumor involvement and distant metastases. These noninvasive techniques provide images of the bile ducts and vascular images that are comparable in quality to those obtained with more invasive procedures, such as PTC, ERCP, and angiography, and do not have the risk for complications of these invasive techniques.
Collapse
Affiliation(s)
- Janio Szklaruk
- Division of Diagnostic Radiology, University of Texas M.D. Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA.
| | | | | |
Collapse
|
34
|
Sarmiento JM, Nagorney DM. Hepatic resection in the treatment of perihilar cholangiocarcinoma. Surg Oncol Clin N Am 2002; 11:893-908, viii-ix. [PMID: 12607578 DOI: 10.1016/s1055-3207(02)00034-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Proximal bile duct cancer poses a difficult surgical problem in hepatobiliary surgery because of its location, patterns of spread, and required extent of resection for complete excision. This article focuses on the anatomic and pathologic issues that are associated with proximal bile duct cancer and assesses the roles of partial hepatectomy and bile duct resection in the surgical management of this cancer. It is hoped that this article provides clinical evidence that supports hepatic resection as an essential and efficacious component of the surgical management of perihilar cholangiocarcinoma in selected patients.
Collapse
Affiliation(s)
- Juan M Sarmiento
- Division of Gastroenterology and General Surgery, Mayo Clinic and Mayo Foundation, 200 First Street SW, Rochester, MN 55905, USA
| | | |
Collapse
|
35
|
Affiliation(s)
- S A Curley
- University of Texas M.D. Anderson Cancer Center, Houston, TX, USA
| |
Collapse
|
36
|
Abstract
In this article we describe state-of-the art techniques for magnetic resonance imaging of the liver. T1-weighted, T2-weighted, and heavily T2-weighted pulse sequences are discussed. Gadolinium-enhanced hepatic parenchymal imaging and magnetic resonance angiography are also described. A comprehensive MR imaging examination of the liver affords evaluation of focal and diffuse hepatic parenchymal disease, biliary disease, and vascular pathology.
Collapse
Affiliation(s)
- Adam R Fisher
- Department of Radiology, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | | |
Collapse
|
37
|
|
38
|
Abstract
A variety of different categories of contrast agents, and within each category a number of individual agents, are currently available for clinical use in magnetic resonance (MR) imaging of the liver. In this review, the use of nonspecific extracellular gadolinium chelates, reticuloendothelial system-specific iron oxide particulate agents, hepatocyte-selective agents, and combined perfusion and hepatocyte-selective agents are described. Most clinical experience is with nonspecific extracellular gadolinium chelates. The relatively low cost, safety, good patient tolerance, and ability to help detect and characterize a wide range of liver diseases have rendered gadolinium chelates as commonly used agents. Reticuloendothelial system-specific agents improve lesion detection by decreasing the signal intensity of background liver on T2-weighted MR images, which increases the conspicuity of focal hepatic lesions with negligible reticuloendothelial cells (eg, metastases). Hepatocyte-selective agents increase the signal intensity of background liver on T1-weighted images, which increases the conspicuity of focal lesions that do not contain hepatocytes (eg, metastases). The clinical application of the different categories of contrast agents, techniques for their administration, sequences to be used, and appearances of common entities on contrast agent-enhanced studies are described.
Collapse
Affiliation(s)
- R C Semelka
- Department of Radiology, University of North Carolina School of Medicine, CB 7510, Chapel Hill, NC 27599-7510, USA.
| | | |
Collapse
|
39
|
Pavone P, Laghi A, Passariello R. MR cholangiopancreatography in malignant biliary obstruction. Semin Ultrasound CT MR 1999; 20:317-23. [PMID: 10527137 DOI: 10.1016/s0887-2171(99)90063-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Malignant lesions of the biliary tract are a frequent occurrence, typically presenting with clinical findings of obstructive jaundice. The authors discuss the role of MR cholangiopancreatography (MRCP) as a second level diagnostic technique, which can provide information regarding not only the location, but also the cause of the obstruction. This can be obtained if MRCP is considered as part of a complete study of the upper abdomen, with acquisition of T1- and T2-weighted images. The "all-in-one" approach may provide the identification, characterization, and staging of the lesion, giving the clinician all the information necessary for the planning of adequate treatment. Typical MR features of cholangiocarcinoma are provided, as well as conventional MR and MRCP findings in pancreatic carcinoma, periampullary carcinoma, and biliary obstruction secondary to hilar lymphadenopathy and metastatic lesions.
Collapse
Affiliation(s)
- P Pavone
- Department of Radiology, University of Rome La Sapienza, Italy
| | | | | |
Collapse
|