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Hwang SM, Yoo SY, Jeong WK, Lee MW, Jeon TY, Kim JH. Superb Microvascular Imaging in Pediatric Focal Nodular Hyperplasia. J Pediatr Hematol Oncol 2024; 46:e233-e240. [PMID: 38408130 PMCID: PMC10956684 DOI: 10.1097/mph.0000000000002826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 01/02/2024] [Indexed: 02/28/2024]
Abstract
OBJECTIVE To investigate superb microvascular imaging (SMI), a novel Doppler ultrasound technique that can visualize low-velocity microvascular flow, for assessing pediatric focal nodular hyperplasia (FNH). PATIENTS AND METHODS Nine FNH lesions in 6 patients were enrolled. On SMI and color Doppler imaging (CDI), intralesional vascularity was assessed visually and categorized as typical spoke-wheel pattern (central vessel radiating from the center to the periphery), multifocal spoke-wheel pattern, and nonspecific pattern. We compared the vascular features of the lesions between SMI and CDI and evaluated vascular patterns according to lesion size. RESULTS In terms of vascularity pattern, the typical spoke-wheel pattern of FNH was noted more frequently on SMI (67%) than on CDI (11%; P < 0.05). In addition, a multifocal spoke-wheel pattern was noted in all remaining lesions (33%) on SMI. On the contrary, a nonspecific vascular pattern was detected in the majority (78%) of CDI. Regarding the lesion size and vascularity on SMI, the typical spoke-wheel pattern was seen more frequently in the small FNH group than in the large FNH group. The intralesional vascular signal was detected more frequently on SMI (100%) than on CDI (89%). CONCLUSION SMI is feasible in evaluating FNH in children and has a greater ability to demonstrate the spoke-wheel pattern than CDI.
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Affiliation(s)
- Sook Min Hwang
- Department of Radiology, Kangnam Sacred Heart Hospital, College of Medicine, Hallym University
| | - So-Young Yoo
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, School of Medicine, Sungkyunkwan University, Seoul, Korea
| | - Woo Kyoung Jeong
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, School of Medicine, Sungkyunkwan University, Seoul, Korea
| | - Min Woo Lee
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, School of Medicine, Sungkyunkwan University, Seoul, Korea
| | - Tae Yeon Jeon
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, School of Medicine, Sungkyunkwan University, Seoul, Korea
| | - Ji Hye Kim
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, School of Medicine, Sungkyunkwan University, Seoul, Korea
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Goyal M, Rozaih K, Bhargava S, Sheth S, Ghuman SS, Buxi TBS. Multicentric Fibrolamellar Hepatocellular Carcinoma: A Rare Case Report. JOURNAL OF GASTROINTESTINAL AND ABDOMINAL RADIOLOGY 2022. [DOI: 10.1055/s-0042-1753535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/15/2022] Open
Abstract
AbstractMulticentric fibrolamellar hepatocellular carcinoma has not been reported yet in the world as of our knowledge. A Medline search for the term “multicentric fibrolamellar HCC” did not return any results. To our knowledge, this is the first case report of multi-centric fibrolamellar hepatocellular carcinoma (HCC). We present the case of a 22-year-old male patient who had complaints of epigastric pain for 1 month. His general physical examinations were normal. Computed tomography of the abdomen revealed multiple hyper-enhancing space-occupying lesions, one of which showed a central scar. The final diagnosis of the case was multicentric fibrolamellar HCC, which was biopsy proven.
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Affiliation(s)
- Mayank Goyal
- Department of Radiology, Sir Ganga Ram Hospital, New Delhi, India
| | | | - Salil Bhargava
- Department of Radiology, Sir Ganga Ram Hospital, New Delhi, India
| | - Swapnil Sheth
- Department of Radiology, Sir Ganga Ram Hospital, New Delhi, India
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Oldhafer KJ, Habbel V, Horling K, Makridis G, Wagner KC. Benign Liver Tumors. Visc Med 2020; 36:292-303. [PMID: 33005655 DOI: 10.1159/000509145] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 06/03/2020] [Indexed: 12/12/2022] Open
Abstract
Background Due to the frequent use of medical imaging including ultrasonography, the incidence of benign liver tumors has increased. There is a large variety of different solid benign liver tumors, of which hemangioma, focal nodular hyperplasia (FNH), and hepatocellular adenoma (HCA) are the most frequent. Advanced imaging techniques allow precise diagnosis in most of the patients, which reduces the need for biopsies only to limited cases. Patients with benign liver tumors are mostly asymptomatic and do not need any kind of treatment. Symptoms can be abdominal pain and pressure effects on adjacent structures. The 2 most serious complications are bleeding and malignant transformation. Summary This review focuses on hepatic hemangioma (HH), FNH, and HCA, and provides an overview on clinical presentations, surgical and interventional treatment, as well as conservative management. Treatment options for HHs, if indicated, include liver resection, radiofrequency ablation, and transarterial catheter embolization, and should be carefully weighed against possible complications. FNH is the most frequent benign liver tumor without any risk of malignant transformation, and treatment should only be restricted to symptomatic patients. HCA is associated with the use of oral contraceptives or other steroid medications. Unlike other benign liver tumors, HCA may be complicated by malignant transformation. HCAs have been divided into 6 subtypes based on molecular and pathological features with different risk of complication. Key Message The vast majority of benign liver tumors remain asymptomatic, do not increase in size, and rarely need treatment. Biopsies are usually not needed as accurate diagnosis can be obtained using modern imaging techniques.
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Affiliation(s)
- Karl J Oldhafer
- Department für Chirurgie, Klinik für Leber-, Gallenwegs- und Pankreaschirurgie, Asklepios Klinik Barmbek, Hamburg, Germany.,Semmelweis University Budapest, Asklepios Campus Hamburg, Hamburg, Germany
| | - Victoria Habbel
- Department für Chirurgie, Klinik für Leber-, Gallenwegs- und Pankreaschirurgie, Asklepios Klinik Barmbek, Hamburg, Germany.,Semmelweis University Budapest, Asklepios Campus Hamburg, Hamburg, Germany
| | | | - Georgios Makridis
- Department für Chirurgie, Klinik für Leber-, Gallenwegs- und Pankreaschirurgie, Asklepios Klinik Barmbek, Hamburg, Germany.,Semmelweis University Budapest, Asklepios Campus Hamburg, Hamburg, Germany
| | - Kim Caroline Wagner
- Department für Chirurgie, Klinik für Leber-, Gallenwegs- und Pankreaschirurgie, Asklepios Klinik Barmbek, Hamburg, Germany.,Semmelweis University Budapest, Asklepios Campus Hamburg, Hamburg, Germany
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Taimr P, Klompenhouwer AJ, Thomeer MGJ, Hansen BE, Ijzermans JNM, de Man RA, de Knegt RJ. Can point shear wave elastography differentiate focal nodular hyperplasia from hepatocellular adenoma. JOURNAL OF CLINICAL ULTRASOUND : JCU 2018; 46:380-385. [PMID: 29740826 PMCID: PMC6033170 DOI: 10.1002/jcu.22603] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 04/06/2018] [Accepted: 04/15/2018] [Indexed: 05/10/2023]
Abstract
PURPOSE Focal nodular hyperplasia (FNH) and hepatocellular adenoma (HCA) are liver tumors that require different management. We assessed the potential of point shear wave elastography (pSWE) to differentiate FNH from HCA and the interobserver and intraobserver reliability of pSWE in the examination of these lesions and of native liver tissue (NLT). METHODS The study included 88 patients (65 FNH, 23 HCA). pSWE was performed by two experienced liver sonographers (observers 1 [O1] and 2 [O2]) and acquired within the lesion of interest and NLT. Group differences, optimal cutoff for characterization and interobserver reliability was assessed with Mann-Whitney-U, area under the ROC curce (AUROC) and intraclass correlation coefficient (ICC). Intraobserver reliability in NLT was assessed in 20 healthy subjects using ICC. RESULTS Median stiffness was significantly higher in FNH than in HCA (7.01 kPa vs 4.98 kPa for O1 (P = 0.017) and 7.68 kPa vs 6.00 kPa for O2 (P = 0.031)). A cutoff point for differentiation between the two entities could not be determined with an AUROC of 0.67 (O1) and 0.69 (O2). Interobserver reliability was good for lesion- stiffness (ICC = 0.86) and poor for NLT stiffness (ICC = 0.09). In healthy subjects, intraobserver reliability for NLT-stiffness was poor for O1 (ICC = 0.23) and moderate for O2 (ICC = 0.62). CONCLUSION This study shows that pSWE cannot reliably differentiate FNH from HCA. Interobserver and intraobserver reliability for pSWE in NLT were insufficient. Interpretation of results gained with this method should be done with great caution.
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Affiliation(s)
- Pavel Taimr
- Department of Gastroenterology and HepatologyErasmus MC University Medical CenterRotterdamThe Netherlands
- Department of HepatogastroenterologyInstitute for Clinical and Experimental MedicinePragueCzech Republic
| | | | | | - Bettina E. Hansen
- Department of Gastroenterology and HepatologyErasmus MC University Medical CenterRotterdamThe Netherlands
- Toronto Centre for Liver DiseaseUniversity Health Network, Toronto General Hospital, University of TorontoOntarioCanada
| | - Jan N. M. Ijzermans
- Department of SurgeryErasmus MC University Medical CenterRotterdamThe Netherlands
| | - Robert A. de Man
- Department of Gastroenterology and HepatologyErasmus MC University Medical CenterRotterdamThe Netherlands
| | - Robert J. de Knegt
- Department of Gastroenterology and HepatologyErasmus MC University Medical CenterRotterdamThe Netherlands
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5
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Roux M, Pigneur F, Baranes L, Calderaro J, Chiaradia M, Decaens T, Kastahian S, Charles-Nelson A, Tselikas L, Costentin C, Laurent A, Azoulay D, Mallat A, Rahmouni A, Luciani A. Differentiating focal nodular hyperplasia from hepatocellular adenoma: Is hepatobiliary phase MRI (HBP-MRI) using linear gadolinium chelates always useful? Abdom Radiol (NY) 2018; 43:1670-1681. [PMID: 29110059 DOI: 10.1007/s00261-017-1377-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
PURPOSE To assess the value of Hepatobiliary phase MRI (HPB-MRI) to differentiate FNH and HCA, and evaluate its impact on diagnostic accuracy, diagnostic confidence, inter-observer variability, and patient clinical management. METHODS Forty-nine patients referred for Gd-BOPTA-enhanced MRI were retrospectively included in this IRB-approved study, with a total of 119 lesions-90 FNH and 29 HCA. Two observers separately assessed in 2 distinct randomized reading sessions the performance of MRI with (HBP-MRI) or without (conventional MRI) the use of HBP images. Each lesion was ranked with a 5-point scale (from 1 Typical FNH to 5 Certainly not a FNH). Sensitivity, specificity, overall accuracy, and inter-observer agreement for the differentiation of FNH from HCA were calculated and compared between conventional and HBP-MRI. RESULTS Both sensitivity (respective values of 38.9% and 97.8%), overall accuracy (respective values of 53.8% and 98.3%), and inter-observer agreement (respective values of Kappa 0.56 and 0.88) were significantly higher using HBP-MRI than with conventional MRI, with unchanged specificity (100%). The sensitivity of conventional MRI for the diagnosis of FNH was significantly lower in lesions ≤ 3 cm (20% vs. 88%). Overall, HBP could have changed lesion management in 59/119 cases (49.5%), including 53 FNH and 6 HCA with no impact in 60/119 lesions (50.5%) including all 35 lesions classified as scores 1 and 2 for the diagnosis of FNH. CONCLUSIONS The clinical impact of HBP-MRI is mostly important for smaller than 3-cm FNH, and more limited in larger FNH lesions as well as for HCA diagnosis for which conventional MRI is already accurate. The use of extracellular contrast agents upfront could limit the required use of linear HBP contrast agents for benign hepatocellular lesion characterization. On HBP, all FNH appeared hypointense compared to adjacent liver while close to 97% of HCA appeared hypointense.
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Affiliation(s)
- Marion Roux
- Service de Radiodiagnostic et Radiologie interventionnelle, CHUV, Rue du Bugnon 46, 1011, Lausanne, Switzerland.
| | - Frederic Pigneur
- Groupe Henri Mondor Albert Chenevier, Imagerie Medicale, AP-HP, 94010, Creteil, France
| | - Laurence Baranes
- Groupe Henri Mondor Albert Chenevier, Imagerie Medicale, AP-HP, 94010, Creteil, France
- Faculte de Medecine de Creteil, Universite Paris Est Creteil, 94010, Creteil, France
| | - Julien Calderaro
- Faculte de Medecine de Creteil, Universite Paris Est Creteil, 94010, Creteil, France
- Groupe Henri Mondor Albert Chenevier, Pathology, AP-HP, 94010, Creteil, France
| | - Mélanie Chiaradia
- Groupe Henri Mondor Albert Chenevier, Imagerie Medicale, AP-HP, 94010, Creteil, France
- Faculte de Medecine de Creteil, Universite Paris Est Creteil, 94010, Creteil, France
| | - Thomas Decaens
- Faculte de Medecine de Creteil, Universite Paris Est Creteil, 94010, Creteil, France
- Groupe Henri Mondor Albert Chenevier, Hepato-Gastroenterology Department, AP-HP, 94010, Creteil, France
| | - Sandrine Kastahian
- Groupe Henri Mondor Albert Chenevier, Unite de Recherche Clinique (URC), AP-HP, 94010, Creteil, France
| | - Anaïs Charles-Nelson
- Groupe Henri Mondor Albert Chenevier, Unite de Recherche Clinique (URC), AP-HP, 94010, Creteil, France
| | - Lambros Tselikas
- Groupe Henri Mondor Albert Chenevier, Imagerie Medicale, AP-HP, 94010, Creteil, France
| | - Charlotte Costentin
- Faculte de Medecine de Creteil, Universite Paris Est Creteil, 94010, Creteil, France
- Groupe Henri Mondor Albert Chenevier, Hepato-Gastroenterology Department, AP-HP, 94010, Creteil, France
| | - Alexis Laurent
- Faculte de Medecine de Creteil, Universite Paris Est Creteil, 94010, Creteil, France
- Groupe Henri Mondor Albert Chenevier, Liver Surgery, AP-HP, 94010, Creteil, France
| | - Daniel Azoulay
- Faculte de Medecine de Creteil, Universite Paris Est Creteil, 94010, Creteil, France
- Groupe Henri Mondor Albert Chenevier, Liver Surgery, AP-HP, 94010, Creteil, France
| | - Ariane Mallat
- Faculte de Medecine de Creteil, Universite Paris Est Creteil, 94010, Creteil, France
- Groupe Henri Mondor Albert Chenevier, Hepato-Gastroenterology Department, AP-HP, 94010, Creteil, France
| | - Alain Rahmouni
- Groupe Henri Mondor Albert Chenevier, Imagerie Medicale, AP-HP, 94010, Creteil, France
- Faculte de Medecine de Creteil, Universite Paris Est Creteil, 94010, Creteil, France
| | - Alain Luciani
- Groupe Henri Mondor Albert Chenevier, Imagerie Medicale, AP-HP, 94010, Creteil, France
- Faculte de Medecine de Creteil, Universite Paris Est Creteil, 94010, Creteil, France
- INSERM Unite U 955, Equipe 18, 94010, Creteil, France
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6
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Reizine E, Amaddeo G, Pigneur F, Baranes L, Legou F, Mulé S, Zegai B, Roche V, Laurent A, Rahmouni A, Calderaro J, Luciani A. Quantitative correlation between uptake of Gd-BOPTA on hepatobiliary phase and tumor molecular features in patients with benign hepatocellular lesions. Eur Radiol 2018; 28:4243-4253. [PMID: 29721686 DOI: 10.1007/s00330-018-5438-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 03/07/2018] [Accepted: 03/19/2018] [Indexed: 12/11/2022]
Abstract
PURPOSE The purpose of our study was to correlate the quantitative analysis of benign hepatocellular tumor uptake on delayed hepatobiliary phase (HBP) imaging with the quantitative level of OATP expression. METHODS This single-center retrospective study, which took place between September 2009 and March 2015, included 20 consecutive patients with a proven pathologic and immunohistochemical (IHC) diagnosis of FNH or HCA, including quantification of the OATP expression. The patients underwent Gd-BOPTA-enhancement MRI, including an HBP. The analysis of HBP uptake was performed using the liver-to-lesion contrast enhancement ratio (LLCER). Mean LLCER and OATP expressions were compared between FNH and HCA, and the expression of OATP was correlated with the LLCER value. RESULTS Of the 23 benign hepatocellular tumors, 9 (39%) were FNH and 14 (61%) were HCA, including 6 inflammatory, 2 HNF1a inactivated, 3 β-catenin-mutated and 3 unclassified HCAs. On HBP, 100% of the FNH appeared hyper- or isointense, and 79% of the adenomas appeared hypointense. The mean OATP expression of FNH (46.67 ± 26.58%) was significantly higher than that of HCA (22.14 ± 30.74%) (p = 0.0273), and the mean LLCER of FNH (10.66 ± 7.403%) was significantly higher than that of HCA (-13.5 ± 12.25%) (p < 0.0001). The mean LLCER of β-catenin-mutated HCA was significantly higher than that of other HCAs (p = 0.011). Significant correlation was found between the OATP expression and LLCER values (r = 0.661; p = 0.001). CONCLUSION In benign hepatocellular tumors, the quantitative analysis of hepatobiliary contrast agent uptake on HBP is correlated with the level of OATP expression and could be used as an imaging biomarker of the molecular background of HCA and FNH. KEY POINTS • Gd-BOPTA uptake on HBP correlates with the OATP level in benign hepatocellular tumors • FNH and β-catenin-mutated HCA showed an increased lesion-to-liver contrast enhancement ratio (LLCER) • Increased LLCER may be explained by activation of the Wnt β-catenin pathway.
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Affiliation(s)
- Edouard Reizine
- Imagerie Medicale, AP-HP, Groupe Henri Mondor Albert Chenevier, 51 avenue du Marechal de Lattre de Tassigny, 94010, Créteil, France.
| | - Giuliana Amaddeo
- Hepatology Department, AP-HP, Groupe Henri Mondor Albert Chenevier, F-94010, Creteil, France.,Faculté de Médecine, Universite Paris Est Creteil, F-94010, Creteil, France.,INSERM Unit U 955, Equipe 18, F-94010, Creteil, France
| | - Frederic Pigneur
- Imagerie Medicale, AP-HP, Groupe Henri Mondor Albert Chenevier, 51 avenue du Marechal de Lattre de Tassigny, 94010, Créteil, France
| | - Laurence Baranes
- Imagerie Medicale, AP-HP, Groupe Henri Mondor Albert Chenevier, 51 avenue du Marechal de Lattre de Tassigny, 94010, Créteil, France
| | - François Legou
- Imagerie Medicale, AP-HP, Groupe Henri Mondor Albert Chenevier, 51 avenue du Marechal de Lattre de Tassigny, 94010, Créteil, France
| | - Sebastien Mulé
- Imagerie Medicale, AP-HP, Groupe Henri Mondor Albert Chenevier, 51 avenue du Marechal de Lattre de Tassigny, 94010, Créteil, France
| | - Benhalima Zegai
- Imagerie Medicale, AP-HP, Groupe Henri Mondor Albert Chenevier, 51 avenue du Marechal de Lattre de Tassigny, 94010, Créteil, France
| | - Vincent Roche
- Imagerie Medicale, AP-HP, Groupe Henri Mondor Albert Chenevier, 51 avenue du Marechal de Lattre de Tassigny, 94010, Créteil, France
| | - Alexis Laurent
- Faculté de Médecine, Universite Paris Est Creteil, F-94010, Creteil, France.,INSERM Unit U 955, Equipe 18, F-94010, Creteil, France.,Liver Surgery, AP-HP, Groupe Henri Mondor Albert Chenevier, F-94010, Creteil, France
| | - Alain Rahmouni
- Imagerie Medicale, AP-HP, Groupe Henri Mondor Albert Chenevier, 51 avenue du Marechal de Lattre de Tassigny, 94010, Créteil, France.,Faculté de Médecine, Universite Paris Est Creteil, F-94010, Creteil, France
| | - Julien Calderaro
- Faculté de Médecine, Universite Paris Est Creteil, F-94010, Creteil, France.,INSERM Unit U 955, Equipe 18, F-94010, Creteil, France.,Pathology, AP-HP, Groupe Henri Mondor Albert Chenevier, F-94010, Creteil, France
| | - Alain Luciani
- Imagerie Medicale, AP-HP, Groupe Henri Mondor Albert Chenevier, 51 avenue du Marechal de Lattre de Tassigny, 94010, Créteil, France.,Faculté de Médecine, Universite Paris Est Creteil, F-94010, Creteil, France.,INSERM Unit U 955, Equipe 18, F-94010, Creteil, France
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Han SB, Kim YK, Min JH, Ha SY, Jeong WK, Lee WJ. Hepatocellular carcinoma with central scar on gadoxetic acid-enhanced and diffusion-weighted magnetic resonance imaging. Acta Radiol 2018; 59:393-401. [PMID: 28760004 DOI: 10.1177/0284185117723040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Background Central scars are rarely reported in conventional hepatocellular carcinoma (HCC). The presence of central scars on imaging might lead to erroneous diagnosis of hepatic tumors. Purpose To determine imaging features of HCC with central scars on magnetic resonance imaging (MRI) including gadoxetic acid-enhanced and diffusion-weighted imaging (DWI). Material and Methods Fifty-one patients with 51 surgically confirmed HCCs with central scars (fibrotic scar: n = 50; myxoid scar: n = 1; range = 1.2-15 cm; mean = 3.7 cm) underwent liver MRI that consisted of T1- and T2-weighted (T2W) imaging, gadoxetic acid-enhanced arterial, portal, 3-min late phase, and 20-min hepatobiliary phase (HBP), and DWI. Two reviewers evaluated morphology, signal intensity, and enhancement features of tumors and central scars for each image and reached consensus. Results Lobulated contour was seen for 30 tumors (58.8%); the rest were round or oval masses. Central scars (range = 0.2-6.0 cm; mean = 0.9 cm) were most commonly seen as defects within hyperenhancement on arterial phase images (n = 47, 92.2%), bright (n = 28, 54.9%) or dark areas (n = 15, 29.4%) on T2W imaging, areas of central darkness on high b-value DWI (b = 800) (n = 31, 60.8%), and/or central enhancement on HBP (n = 36, 70.6%), mimicking a target appearance. Tumor capsule was seen in 35 (39 pathology, 74.5%) and intratumoral septum in 35 (41 pathology, 78.4%) tumors on gadoxetic acid-enhanced MRI. Conclusion Non-fibrolamellar HCC may show central scar. HCC with central scar mimics cholangiocarcinoma by showing a target appearance on HBP and DWI. Tumor capsule and intratumoral septum might be useful for characterizing HCC with central scar.
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Affiliation(s)
- Sol Bee Han
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Young Kon Kim
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Ji Hye Min
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Sang Yun Ha
- Department of Pathology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Woo Kyung Jeong
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Won Jae Lee
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
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8
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Efficacy comparison of multi-phase CT and hepatotropic contrast-enhanced MRI in the differential diagnosis of focal nodular hyperplasia: a prospective cohort study. BMC Gastroenterol 2018; 18:10. [PMID: 29334905 PMCID: PMC5769413 DOI: 10.1186/s12876-017-0719-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2016] [Accepted: 11/29/2017] [Indexed: 11/25/2022] Open
Abstract
Background Different clinical behaviour influences the importance of differentiating focal nodular hyperplasia (FNH) from other focal liver lesions (FLLs). The aim of this study was to compare the efficacy of contrast-enhanced CT and MRI in the diagnosis of FNH. Methods 157 patients with equivocal FLLs detected in ultrasonography subsequently underwent multi-phase CT and MRI with the use of hepatotropic contrast agent (Gd-BOPTA) in a 1.5 T scanner. Examinations were evaluated by three independent readers. Diagnostic efficacy of different radiological signs of FNH in both CT and MRI was compared and AFROC analysis was performed. Results 4 hepatocellular adenomas, 95 hepatocellular carcinomas, 98 hemangiomas, 138 metastases and 45 FNHs were diagnosed. In both CT and MRI the radiological sign of the highest accuracy was the presence of the central scar within FNH (0.93 and 0.96 relatively). The sum of two radiological signs in MRI: homogeneous enhancement in hepatic arterial phase (HAP) and enhancing lesion in hepatobiliary phase (HBP) was characterized with high values of sensitivity (0.89), specificity (0.97), PPV (0.82), NPV (0.98) and accuracy (0.96). After inclusion of clinical data into analysis the best discriminating feature in MRI was the presence of enhancing lesion in HBP in patients without cirrhosis. In this regard, efficacy parameters increased to 1.00, 0.99, 0.94, 1.00 and 0.99 accordingly. The area under the curve in AFROC analysis of MRI performance was significantly larger than of CT (p = 0.0145). Conclusion Gd-BOPTA-enhanced MRI is a more effective method in the differential diagnosis of FNH than multi-phase CT. Electronic supplementary material The online version of this article (10.1186/s12876-017-0719-1) contains supplementary material, which is available to authorized users.
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Ambe PC, Jansen S, Zirngibl H. Tissue sublimation follow transarterial embolization of a follicular nodular hyperplasia of the liver-report of a case. BMC Gastroenterol 2017; 17:91. [PMID: 28764652 PMCID: PMC5540510 DOI: 10.1186/s12876-017-0648-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Accepted: 07/26/2017] [Indexed: 11/25/2022] Open
Abstract
Background Follicular nodular hyperplasia (FNH) is a common benign liver tumor for which conservative management is indicated. Surgical or interventional management is indicated in symptomatic cases. Transarterial embolization (TAE) has been extensively used to manage unresectable liver tumors. Sublimation describes a change of physical state from solid to gas. Hepatic tissue sublimation following TAE has so far not been reported in medical literature. Case presentation A 30 year - old male patient presenting with pain to the upper abdomen due to a large FNH was managed with TAE. Routine radiographic control on post-intervention day one was within normal limits. Imaging due to right upper quadrant pain with fever and elevated inflammatory markers and liver enzymes on day two after TAE revealed a marked reduction of the FNH accompanied by the presence of a large volume of gas collection without signs of abscess formation. This change of state from solid to gas without sign of abscess formation within 2 days after TAE was described as hepatic tissue sublimation. The patient was managed conservatively and discharge 12 days after TAE. Conclusion Tissue sublimation has hardly been reported in medical literature. This to the best of our knowledge is the first documented case of hepatic tissue sublimation following TAE.
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Affiliation(s)
- Peter C Ambe
- Department of Surgery, Helios University Hospital Wuppertal, Witten - Herdecke University, Heusnerstr. 40, 42283, Wuppertal, Germany.
| | - Stefan Jansen
- Department of Surgery, Helios University Hospital Wuppertal, Witten - Herdecke University, Heusnerstr. 40, 42283, Wuppertal, Germany
| | - Hubert Zirngibl
- Department of Surgery, Helios University Hospital Wuppertal, Witten - Herdecke University, Heusnerstr. 40, 42283, Wuppertal, Germany
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Tselikas L, Pigneur F, Roux M, Baranes L, Costentin C, Roche V, Calderaro J, Herin E, Laurent A, Zafrani E, Azoulay D, Mallat A, Rahmouni A, Luciani A. Impact of hepatobiliary phase liver MRI versus Contrast-Enhanced Ultrasound after an inconclusive extracellular gadolinium-based contrast-enhanced MRI for the diagnosis of benign hepatocellular tumors. Abdom Radiol (NY) 2017; 42:825-832. [PMID: 27704147 DOI: 10.1007/s00261-016-0921-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
PURPOSE To compare the added values of hepatobiliary phase (HBP) MRI and contrast-enhanced ultrasound (CEUS) in addition to inconclusive extracellular gadolinium-based contrast-enhanced MRI (CE-MRI) to characterize benign hepatocellular tumors (BHT). METHODS Eighty-three BHT-46 focal nodular hyperplasia (FNH) and 37 hepatocellular adenomas (HCA)-with inconclusive CE-MRI in 54 patients (43 women and 11 men, mean age 42 years old ± 14.8) were retrospectively analyzed. All patients underwent both HBP-MRI and CEUS. Two radiologists independently reviewed 2 sets of images, SET-1: CE-MRI and HBP-MRI; SET-2: CE-MRI and CEUS, and classified lesions as "definite FNH," "possible FNH," or "definitely not FNH." Sensitivity (Se) and specificity (Spe) were compared between the two sets; subgroup analyses according to the lesion's size were performed. RESULTS Regardless of lesion size, the respective Se and Spe of both datasets were not statistically different (95.7 and 100% vs. 76.1 and 94.6% for set-1 and -2 respectively; p = 0.18). For lesions larger than 35 mm, although both sets had similar specificity (100%), sensitivity was higher for SET-1 (100% vs. 40%); p = 0.04. Tumor classifications using SET-1 and SET-2 could have changed patient management in 35/54 (64.8%) and 33/54 (61.1%) of all patients, respectively. CONCLUSIONS HBP-MRI or CEUS should be performed after an inconclusive CE-MRI. Both can change patient management by avoiding unnecessary biopsy or surveillance. The use of HBP-MRI should be advocated over CEUS in larger (>35 mm) lesions.
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Affiliation(s)
- Lambros Tselikas
- Imagerie Medicale, CHU Henri Mondor, AP-HP, Groupe Henri Mondor Albert Chenevier, 51 avenue du Marechal de Lattre de Tassigny, 94010, Créteil, France
| | - Frederic Pigneur
- Imagerie Medicale, CHU Henri Mondor, AP-HP, Groupe Henri Mondor Albert Chenevier, 51 avenue du Marechal de Lattre de Tassigny, 94010, Créteil, France
| | - Marion Roux
- Imagerie Medicale, CHU Henri Mondor, AP-HP, Groupe Henri Mondor Albert Chenevier, 51 avenue du Marechal de Lattre de Tassigny, 94010, Créteil, France
| | - Laurence Baranes
- Imagerie Medicale, CHU Henri Mondor, AP-HP, Groupe Henri Mondor Albert Chenevier, 51 avenue du Marechal de Lattre de Tassigny, 94010, Créteil, France
| | - Charlotte Costentin
- Hepatology Department, AP-HP, Groupe Henri Mondor Albert Chenevier, Créteil, 94010, France
| | - Vincent Roche
- Imagerie Medicale, CHU Henri Mondor, AP-HP, Groupe Henri Mondor Albert Chenevier, 51 avenue du Marechal de Lattre de Tassigny, 94010, Créteil, France
| | - Julien Calderaro
- Department of Pathology, AP-HP, Groupe Henri Mondor Albert Chenevier, Créteil, 94010, France
- Universite Paris Est Creteil, Créteil, 94010, France
| | - Edouard Herin
- Imagerie Medicale, CHU Henri Mondor, AP-HP, Groupe Henri Mondor Albert Chenevier, 51 avenue du Marechal de Lattre de Tassigny, 94010, Créteil, France
| | - Alexis Laurent
- Universite Paris Est Creteil, Créteil, 94010, France
- Liver Surgery Department, AP-HP, Groupe Henri Mondor Albert Chenevier, Créteil, 94010, France
- INSERM IMRB Unit U 955, Equipe 18, Créteil, 94010, France
| | - Elie Zafrani
- Department of Pathology, AP-HP, Groupe Henri Mondor Albert Chenevier, Créteil, 94010, France
| | - Daniel Azoulay
- Universite Paris Est Creteil, Créteil, 94010, France
- Liver Surgery Department, AP-HP, Groupe Henri Mondor Albert Chenevier, Créteil, 94010, France
| | - Ariane Mallat
- Hepatology Department, AP-HP, Groupe Henri Mondor Albert Chenevier, Créteil, 94010, France
- Universite Paris Est Creteil, Créteil, 94010, France
| | - Alain Rahmouni
- Imagerie Medicale, CHU Henri Mondor, AP-HP, Groupe Henri Mondor Albert Chenevier, 51 avenue du Marechal de Lattre de Tassigny, 94010, Créteil, France
- Universite Paris Est Creteil, Créteil, 94010, France
| | - Alain Luciani
- Imagerie Medicale, CHU Henri Mondor, AP-HP, Groupe Henri Mondor Albert Chenevier, 51 avenue du Marechal de Lattre de Tassigny, 94010, Créteil, France.
- Universite Paris Est Creteil, Créteil, 94010, France.
- INSERM IMRB Unit U 955, Equipe 18, Créteil, 94010, France.
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11
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Dioguardi Burgio M, Ronot M, Salvaggio G, Vilgrain V, Brancatelli G. Imaging of Hepatic Focal Nodular Hyperplasia: Pictorial Review and Diagnostic Strategy. Semin Ultrasound CT MR 2016; 37:511-524. [PMID: 27986170 DOI: 10.1053/j.sult.2016.08.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Focal nodular hyperplasia (FNH) is the second most common benign solid liver lesion after hemangioma, occurring more frequently in young women. The prime differential diagnoses include hepatocellular adenoma, hepatocellular carcinoma, and hypervascular metastasis. As the management of FNH is typically conservative, imaging plays a key role in diagnostic pathway, and misdiagnosis may have a major clinical effect. In this article, we describe the ultrasound, computed tomography, and magnetic resonance imaging features of FNH, underlining the importance of typical radiological features that allow a specific noninvasive diagnosis. We present a large spectrum of a typical imaging findings that FNH may present and discuss the up-to-date diagnostic strategy.
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Affiliation(s)
- Marco Dioguardi Burgio
- Radiology Department, Beaujon Hospital, University Hospitals Paris Nord Val de Seine, Assistance Publique-Hôpitaux de Paris, APHP, Clichy, France
| | - Maxime Ronot
- Radiology Department, Beaujon Hospital, University Hospitals Paris Nord Val de Seine, Assistance Publique-Hôpitaux de Paris, APHP, Clichy, France; University Paris Diderot, Sorbonne Paris Cité, INSERM UMR 1149, Paris, France
| | - Giuseppe Salvaggio
- Section of Radiological Sciences, Department of Biopathology and Medical Biotechnologies Di.Bi.Med., University of Palermo, Palermo, Italy
| | - Valérie Vilgrain
- Radiology Department, Beaujon Hospital, University Hospitals Paris Nord Val de Seine, Assistance Publique-Hôpitaux de Paris, APHP, Clichy, France; University Paris Diderot, Sorbonne Paris Cité, INSERM UMR 1149, Paris, France
| | - Giuseppe Brancatelli
- Section of Radiological Sciences, Department of Biopathology and Medical Biotechnologies Di.Bi.Med., University of Palermo, Palermo, Italy.
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12
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EASL Clinical Practice Guidelines on the management of benign liver tumours. J Hepatol 2016; 65:386-98. [PMID: 27085809 DOI: 10.1016/j.jhep.2016.04.001] [Citation(s) in RCA: 284] [Impact Index Per Article: 35.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 04/05/2016] [Indexed: 02/06/2023]
Affiliation(s)
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- European Association for the Study of the Liver (EASL), The EASL Building – Home of European Hepatology, 7 rue Daubin, CH 1203 Geneva, Switzerland.
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13
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Brunel T, Guibal A, Boularan C, Ducerf C, Mabrut JY, Bancel B, Boussel L, Rode A. Focal nodular hyperplasia and hepatocellular adenoma: The value of shear wave elastography for differential diagnosis. Eur J Radiol 2015; 84:2059-64. [PMID: 26299323 DOI: 10.1016/j.ejrad.2015.07.029] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Revised: 07/15/2015] [Accepted: 07/27/2015] [Indexed: 12/24/2022]
Abstract
OBJECTIVE This study assessed the clinical usefulness of shear wave elastography (SWE) during ultrasound for differentiating between focal nodular hyperplasias (FNHs) and hepatocellular adenomas (HAs). MATERIALS AND METHODS SWE was performed on 56 patients presenting with 76 liver lesions (57 FNHs and 19HAs) that were confirmed by MRI and contrast-enhanced ultrasound (CEUS) (n=55) or by histology (n=21). A mean elasticity value was obtained for each lesion. The ratios of the elasticity of the lesions to the elasticity of the surrounding liver were determined. The optimal elasticity cut-off value for distinguishing between the two lesion types was determined using ROC analysis. All lesions that were classified as "undetermined" after CEUS were reclassified using the elasticity values. RESULTS The mean elasticity value was 46.99 ± 31.15 kPa for FNHs and 12.08 ± 10.68 kPa for HAs (p<0.0001). The mean relative elasticity ratio values were 7.94 ± 6.43 and 1.91 ± 1.70, respectively (p<0.0001). The ROC analysis showed a maximal accuracy of 95% for identification with a cut-off of 18.8 kPa for lesion elasticity (accuracy of 96% with a cut-off of 1.98 for the relative elasticity ratio). A total of 68 CEUS were performed, and 17 lesions (25%) were classified as "undetermined" after CEUS. With these cut-off values 16 lesions (94.1%) were correctly reclassified as FNHs. CONCLUSION SWE is a useful adjunctive tool for differentiation between FNH and HA during ultrasound examination.
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Affiliation(s)
- Thomas Brunel
- Service de Radiologie, Hôpital de la Croix-Rousse, 103 Grande rue de la Croix-Rousse, 69004 Lyon, France.
| | - Aymeric Guibal
- Service d'imagerie abdominale, Hospices Civils de Lyon, Hôpital Edouard Herriot, 69437 Lyon cedex 03, France.
| | - Camille Boularan
- Service d'imagerie abdominale, Hospices Civils de Lyon, Hôpital Edouard Herriot, 69437 Lyon cedex 03, France.
| | - Christian Ducerf
- Service de Chirurgie Digestive, Hôpital de la Croix-Rousse, 103 Grande rue de la Croix-Rousse, 69004 Lyon, France.
| | - Jean-Yves Mabrut
- Service de Chirurgie Digestive, Hôpital de la Croix-Rousse, 103 Grande rue de la Croix-Rousse, 69004 Lyon, France.
| | - Brigitte Bancel
- Service d'Anatomie et de Cytologie Pathologiques, Hôpital de la Croix-Rousse, 103 Grande rue de la Croix-Rousse, 69004 Lyon, France.
| | - Loïc Boussel
- Service de Radiologie, Hôpital de la Croix-Rousse, 103 Grande rue de la Croix-Rousse, 69004 Lyon, France.
| | - Agnès Rode
- Service de Radiologie, Hôpital de la Croix-Rousse, 103 Grande rue de la Croix-Rousse, 69004 Lyon, France.
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14
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Chiorean L, Cui XW, Tannapfel A, Franke D, Stenzel M, Kosiak W, Schreiber-Dietrich D, Jüngert J, Chang JM, Dietrich CF. Benign liver tumors in pediatric patients - Review with emphasis on imaging features. World J Gastroenterol 2015; 21:8541-8561. [PMID: 26229397 PMCID: PMC4515836 DOI: 10.3748/wjg.v21.i28.8541] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Revised: 04/16/2015] [Accepted: 05/21/2015] [Indexed: 02/07/2023] Open
Abstract
Benign hepatic tumors are commonly observed in adults, but rarely reported in children. The reasons for this remain speculative and the exact data concerning the incidence of these lesions are lacking. Benign hepatic tumors represent a diverse group of epithelial and mesenchymal tumors. In pediatric patients, most benign focal liver lesions are inborn and may grow like the rest of the body. Knowledge of pediatric liver diseases and their imaging appearances is essential in order to make an appropriate differential diagnosis. Selection of the appropriate imaging test is challenging, since it depends on a number of age-related factors. This paper will discuss the most frequently encountered benign liver tumors in children (infantile hepatic hemangioendothelioma, mesenchymal hamartoma, focal nodular hyperplasia, nodular regenerative hyperplasia, and hepatocellular adenoma), as well as a comparison to the current knowledge regarding such tumors in adult patients. The current emphasis is on imaging features, which are helpful not only for the initial diagnosis, but also for pre- and post-treatment evaluation and follow-up. In addition, future perspectives of contrast-enhanced ultrasound (CEUS) in pediatric patients are highlighted, with descriptions of enhancement patterns for each lesion being discussed. The role of advanced imaging tests such as CEUS and magnetic resonance imaging, which allow for non-invasive assessment of liver tumors, is of utmost importance in pediatric patients, especially when repeated imaging tests are needed and radiation exposure should be avoided.
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15
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Swanson BJ, Yearsley MM, Marsh W, Frankel WL. A triple stain of reticulin, glypican-3, and glutamine synthetase: a useful aid in the diagnosis of liver lesions. Arch Pathol Lab Med 2015; 139:537-42. [PMID: 25822763 DOI: 10.5858/arpa.2013-0645-oa] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
CONTEXT The correct histologic diagnosis of mass lesions of the liver can be difficult, especially in biopsy samples. Reticulin, glypican-3, and glutamine synthetae are stains that can help distinguish hepatocellular carcinoma, hepatic adenoma, and focal nodular hyperplasia. OBJECTIVE To evaluate the utility of a triple stain of reticulin, glypican-3, and glutamine synthetae in distinguishing hepatocellular carcinoma, hepatic adenoma, and focal nodular hyperplasia. DESIGN Whole tissue sections and tissue microarrays were evaluated with a triple stain of reticulin, followed by glutamine synthetae (diaminobenzidine, brown chromogen) and glypican-3 (alkaline phosphatase, red chromogen). The 109 cases evaluated included whole tissue section hepatocellular carcinoma (n = 16), tissue microarray hepatocellular carcinoma (n = 19), whole tissue section hepatic adenoma (n = 15), tissue microarray hepatic adenoma (n = 13), whole tissue section focal nodular hyperplasia (n = 13; 12%), tissue microarray focal nodular hyperplasia (n = 13), as well as nonmalignant liver parenchyma adjacent to hepatocellular carcinoma (n = 20). All cases were scored for reticulin being intact or lost, positive or negative staining for glypican-3, and diffuse, maplike, perivenular, or negative staining for glutamine synthetae. RESULTS The combination of intact reticulin with either glypican-3 negativity or negative glutamine synthetae was 92% sensitive and 95% specific in the distinction of tissue microarray hepatic adenoma from hepatocellular carcinoma. For the distinction of tissue microarray focal nodular hyperplasia and hepatic adenoma, maplike glutamine synthetae was most useful and was 85% sensitive and 100% specific. CONCLUSIONS The triple stain of reticulin, glypican-3, and glutamine synthetae is useful in the differentiation of hepatocellular carcinoma, hepatic adenoma, and focal nodular hyperplasia on biopsy specimens. Furthermore, this triple stain is advantageous to single stains and can help when aberrant staining patterns are observed.
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Affiliation(s)
- Benjamin J Swanson
- From the Department of Pathology, Ohio State University Wexner Medical Center, Columbus
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16
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Roux M, Pigneur F, Calderaro J, Baranes L, Chiaradia M, Tselikas L, Decaens T, Costentin C, Laurent A, Azoulay D, Mallat A, Zafrani ES, Rahmouni A, Luciani A. Differentiation of focal nodular hyperplasia from hepatocellular adenoma: Role of the quantitative analysis of gadobenate dimeglumine-enhanced hepatobiliary phase MRI. J Magn Reson Imaging 2015; 42:1249-58. [PMID: 25851028 DOI: 10.1002/jmri.24897] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2015] [Accepted: 03/11/2015] [Indexed: 01/23/2023] Open
Abstract
PURPOSE To determine the value of quantitative analysis of the hepatobiliary phase (HBP) in gadobenate dimeglumine (Gd-BOPTA)-enhanced magnetic resonance imaging (MRI) to differentiate focal nodular hyperplasia (FNH) from hepatocellular adenoma (HCA). MATERIALS AND METHODS Thirty-eight patients bearing 67 lesions (40 FNH; 27 HCA) were retrospectively included in this Institutional Review Board-approved study. The same volumetric interpolated breath-hold examination (VIBE) T1 -weighted sequences were performed before and after contrast injection on a 1.5T MRI, with HBP images acquired with a mean delay of 80 minutes (range 60-120 min). After a visual assessment of lesions enhancement (qualitative HBP analysis), the HBP signal intensity ratio (SIR) and the lesion-to-liver contrast enhancement ratio (LLCER) were calculated for each lesion by two observers (Mann-Whitney test). The sensitivities, specificities (receiver operating characteristic [ROC] curve analysis) and interobserver correlation (intraclass coefficient, ICC) of quantitative HBP analysis were determined. RESULTS All FNH and 44.4% of HCA appeared hyper- or isointense relative to the adjacent liver on qualitative HBP analysis. The mean SIR (P < 0.01) and LLCER (P < 0.0001) of FNH were significantly higher than that of HCA. The area under the ROC curve for the differentiation of FNH from HCA with LLCER was 0.98 for both observers. With a cutoff value of -0.3%-observer 1 with highest experience- LLCER assessment provided respective sensitivity and specificity values of 100% and 96.2% for the differentiation of FNH from HCA. The ICC was 0.7 for SIR measurements and 0.8 for LLCER measurements. CONCLUSION Quantitative LLCER assessment allows an accurate differentiation of FNH from HCA, even in hyper- or isointense HCA on HBP images.
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Affiliation(s)
- Marion Roux
- AP-HP, Groupe Henri Mondor Albert Chenevier, Radiology Department, Creteil, France
| | - Frederic Pigneur
- AP-HP, Groupe Henri Mondor Albert Chenevier, Radiology Department, Creteil, France
| | - Julien Calderaro
- Paris Est Creteil University, Creteil, France.,AP-HP, Groupe Henri Mondor Albert Chenevier, Pathology Department, Creteil, France
| | - Laurence Baranes
- AP-HP, Groupe Henri Mondor Albert Chenevier, Radiology Department, Creteil, France
| | - Mélanie Chiaradia
- AP-HP, Groupe Henri Mondor Albert Chenevier, Radiology Department, Creteil, France.,Paris Est Creteil University, Creteil, France
| | - Lambros Tselikas
- AP-HP, Groupe Henri Mondor Albert Chenevier, Radiology Department, Creteil, France
| | - Thomas Decaens
- Paris Est Creteil University, Creteil, France.,AP-HP, Groupe Henri Mondor Albert Chenevier, Hepato-Gastroenterology Department, Creteil, France
| | - Charlotte Costentin
- Paris Est Creteil University, Creteil, France.,AP-HP, Groupe Henri Mondor Albert Chenevier, Hepato-Gastroenterology Department, Creteil, France
| | - Alexis Laurent
- Paris Est Creteil University, Creteil, France.,AP-HP, Groupe Henri Mondor Albert Chenevier, Liver Surgery Department, Creteil, France
| | - Daniel Azoulay
- Paris Est Creteil University, Creteil, France.,AP-HP, Groupe Henri Mondor Albert Chenevier, Liver Surgery Department, Creteil, France
| | - Ariane Mallat
- Paris Est Creteil University, Creteil, France.,AP-HP, Groupe Henri Mondor Albert Chenevier, Hepato-Gastroenterology Department, Creteil, France
| | - Elie-Serge Zafrani
- Paris Est Creteil University, Creteil, France.,AP-HP, Groupe Henri Mondor Albert Chenevier, Pathology Department, Creteil, France
| | - Alain Rahmouni
- AP-HP, Groupe Henri Mondor Albert Chenevier, Radiology Department, Creteil, France.,Paris Est Creteil University, Creteil, France
| | - Alain Luciani
- AP-HP, Groupe Henri Mondor Albert Chenevier, Radiology Department, Creteil, France.,Paris Est Creteil University, Creteil, France.,INSERM Unite U 955, Equipe 17, Molecular Mechanisms of Liver Fibrosis, Creteil, France
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17
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Darai N, Shu R, Gurung R, Zhang X, Teng G. Atypical CT and MRI Features of Focal Nodular Hyperplasia of Liver: A Study with Radiologic-Pathologic Correlation. ACTA ACUST UNITED AC 2015. [DOI: 10.4236/ojrad.2015.53020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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19
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Belghiti J, Cauchy F, Paradis V, Vilgrain V. Diagnosis and management of solid benign liver lesions. Nat Rev Gastroenterol Hepatol 2014; 11:737-49. [PMID: 25178878 DOI: 10.1038/nrgastro.2014.151] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
More and more asymptomatic benign liver tumours are discovered incidentally and can be divided into regenerative lesions and true neoplastic lesions. The most common regenerative lesions include hemangioma, focal nodular hyperplasia and inflammatory pseudotumours of the liver. Neoplastic lesions include hepatocellular adenomas and angiomyolipomas. Regenerative lesions rarely increase in volume, do not yield a higher risk of complications and usually do not require treatment. By contrast, hepatocellular adenomas and angiomyolipomas can increase in volume and are associated with a risk of complications. Large hepatocellular adenomas (>5 cm in diameter) are undoubtedly associated with a risk of bleeding and malignant transformation, particularly the inflammatory (also known as telangiectatic) and β-catenin mutated subtypes. Accurate diagnosis needs to be obtained to select patients eligible for surgical resection. MRI has markedly improved diagnosis and can identify the major hepatocellular adenomas subtypes. The use of biopsy results to inform the indication for resection remains questionable. However, when diagnosis remains uncertain after imaging, percutaneous biopsy could help improve diagnostic accuracy.
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Affiliation(s)
- Jacques Belghiti
- Department of Hepatobiliary Surgery and Liver Transplantation, Beaujon Hospital, University Paris-Diderot, 100 Boulevard du General Leclerc, 92110 Clichy, France
| | - François Cauchy
- Department of Hepatobiliary Surgery and Liver Transplantation, Beaujon Hospital, University Paris-Diderot, 100 Boulevard du General Leclerc, 92110 Clichy, France
| | - Valérie Paradis
- Department of Pathology, Beaujon Hospital, University Paris-Diderot, 100 Boulevard du General Leclerc, 92110 Clichy, France
| | - Valérie Vilgrain
- Department of Radiology, Beaujon Hospital, University Paris-Diderot, 100 Boulevard du General Leclerc, 92110 Clichy, France
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Ronot M, Vilgrain V. Imaging of benign hepatocellular lesions: current concepts and recent updates. Clin Res Hepatol Gastroenterol 2014; 38:681-8. [PMID: 24636468 DOI: 10.1016/j.clinre.2014.01.014] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Accepted: 01/27/2014] [Indexed: 02/04/2023]
Abstract
Focal nodular hyperplasia (FNH) and hepatocellular adenoma (HCA) are a variety of solid lesions mostly found in the absence of underlying chronic liver disease in young patients. HCA is no longer to be considered as a unique lesion but as a recollection of different entities sharing common points but most of all separated by different typical morphological aspects. Accurate diagnosis is of clinical importance as the management is most of the time conservative for FNH, whereas HCAs expose patients to hemorrhage and malignant transformation, and may lead to a more invasive treatment, mainly surgical resection. Moreover, the different HCA subtypes expose to different risks of complication. The best imaging techniques for the differentiation between FNH and HCAs and for the subtyping of HCAs are contrast-enhanced ultrasound (CEUS) and magnetic resonance imaging (MRI), as specific combinations of imaging features have been associated with the different lesions. They should be considered as complementary examinations. Atypical or multiple lesions, lesions containing fat or presence of an associated steatosis represent diagnostic challenges. Recently, MR hepatospecific contrast agents have been shown to be useful. Emergent elastography techniques might also be helpful in the near future. Biopsy should always be performed in case of uncertain diagnosis to reach a final diagnosis and avoid unnecessary invasive treatment.
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Affiliation(s)
- Maxime Ronot
- Department of Radiology, Hôpital Beaujon, Assistance Publique-Hôpitaux de Paris, AP-HP, 100, boulevard du Général-Leclerc, 92110 Clichy, France; INSERM Centre de recherche Biomédicale Bichat-Beaujon, université Paris-Diderot, Sorbonne-Paris-Cité, CRB3 U773, 75018 Paris, France.
| | - Valérie Vilgrain
- Department of Radiology, Hôpital Beaujon, Assistance Publique-Hôpitaux de Paris, AP-HP, 100, boulevard du Général-Leclerc, 92110 Clichy, France; INSERM Centre de recherche Biomédicale Bichat-Beaujon, université Paris-Diderot, Sorbonne-Paris-Cité, CRB3 U773, 75018 Paris, France
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21
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Contrast-enhanced ultrasound of focal nodular hyperplasia: a matter of size. Eur Radiol 2014; 24:2561-71. [PMID: 24962831 DOI: 10.1007/s00330-014-3280-0] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Revised: 05/26/2014] [Accepted: 06/06/2014] [Indexed: 12/17/2022]
Abstract
OBJECTIVES To assess the contrast-enhanced ultrasound (CEUS) frequencies of centrifugal enhancement, spoke-wheel sign and central scar in focal nodular hyperplasia (FNH) as a function of lesion size. METHODS Ninety-four FNHs were retrospectively reviewed to assess their largest diameter and enhancement pattern, including centrifugal enhancement from one central artery, spoke-wheel sign, diffuse or centripetal enhancement, central scar and late-phase washout. RESULTS Mean FNH-lesion size was 3.7 ± 2.1 cm. Only 43.6 % of FNHs had centrifugal enhancement, with a spoke-wheel pattern (23.4 %) or without (20.2 %), while 56.4 % showed diffuse or centripetal enhancement. Centrifugal enhancement was observed in 73.9 % of FNHs ≤3.1 cm and 14.6 % of FNHs >3.1 cm (P < 10(-4)). Size and frequency of centrifugal enhancement were negatively correlated (r = -0.57, P < 10(-4)). The spoke-wheel pattern was also seen more frequently in smaller (37 %) than in larger FNHs (10.4 %) (P < 10(-3)). Late-phase washout was described in 5.3 % of FNHs and was not size-dependent. Lesions with a central scar were larger than those without, respectively, 5.7 ± 1.7 and 3.6 ± 2.0 cm (P = 0.012). CONCLUSIONS Typical centrifugal enhancement yielding a confident FNH diagnosis is seen significantly more frequently when the lesion is ≤3.1 cm. KEY POINTS • CEUS yields confident diagnoses of FNHs ≤3.1 cm • The larger the FNH, the lower the diagnostic sensitivity of CEUS • Final diagnosis of FNHs >3.1 cm should be obtained with MRI not CEUS.
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van Kessel CS, de Boer E, ten Kate FJW, Brosens LAA, Veldhuis WB, van Leeuwen MS. Focal nodular hyperplasia: hepatobiliary enhancement patterns on gadoxetic-acid contrast-enhanced MRI. ACTA ACUST UNITED AC 2014; 38:490-501. [PMID: 22729462 PMCID: PMC3672515 DOI: 10.1007/s00261-012-9916-0] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVES To assess the range of hepatobiliary enhancement patterns of focal nodular hyperplasia (FNH) after gadoxetic-acid injection, and to correlate these patterns to specific histological features. MATERIALS AND METHODS FNH lesions, imaged with Gadoxetic-acid-enhanced MRI, with either typical imaging findings on T1, T2 and dynamic-enhanced sequences or histologically proven, were evaluated for hepatobiliary enhancement patterns and categorized as homogeneously hyperintense, inhomogeneously hyperintense, iso-intense, or hypo-intense-with-ring. Available histological specimens of FNHs (surgical resection or histological biopsy), were re-evaluated to correlate histological features with observed enhancement patterns. RESULTS 26 FNHs in 20 patients were included; histology was available in six lesions (four resections, two biopsies). The following distribution of enhancement patterns was observed: 10/26 homogeneously hyperintense, 4/26 inhomogeneously hyperintense, 5/26 iso-intense, 6/26 hypointense-with-ring, and 1/26 hypointense, but without enhancing ring. The following histological features associated with gadoxetic-acid uptake were identified: number and type of bile-ducts (pre-existent bile-ducts, proliferation, and metaplasia), extent of fibrosis, the presence of inflammation and extent of vascular proliferation. CONCLUSION FNH lesions can be categorized into different hepatobiliary enhancement patterns on Gadoxetic-acid-enhanced MRI, which appear to be associated with histological differences in number and type of bile-ducts, and varying the presence of fibrous tissue, inflammation, and vascularization.
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Affiliation(s)
- C S van Kessel
- Department of Radiology, University Medical Center Utrecht, Heidelberglaan 100, Utrecht, The Netherlands.
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Baranes L, Chiaradia M, Pigneur F, Decaens T, Djabbari M, Zegaï B, Costentin C, Laurent A, Calderaro J, Rahmouni A, Luciani A. Imaging benign hepatocellular tumors: atypical forms and diagnostic traps. Diagn Interv Imaging 2013; 94:677-95. [PMID: 23830777 DOI: 10.1016/j.diii.2013.05.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Management of patients with a benign hepatocellular tumor relies largely on imaging data; the diagnosis of focal nodular hyperplasia (FNH) must be made with certainty using MRI, because no other clinical or laboratory data can help diagnosis. It is also essential to identify adenomas to manage them appropriately. The radiological report in these situations is therefore of major importance. However, there are diagnostic traps. The aim of this paper is to present the keys to the diagnosis of benign lesions and to warn of the main diagnostic pitfalls.
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Affiliation(s)
- L Baranes
- Medical imaging department, Henri-Mondor University Hospital, AP-HP, 51, avenue du Maréchal-de-Lattre-de-Tassigny, 94010 Créteil cedex, France
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Focal nodular hyperplasia and hepatic adenoma: current diagnosis and management. Updates Surg 2013; 66:9-21. [DOI: 10.1007/s13304-013-0222-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Accepted: 06/16/2013] [Indexed: 12/25/2022]
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Nault JC, Bioulac-Sage P, Zucman-Rossi J. Hepatocellular benign tumors-from molecular classification to personalized clinical care. Gastroenterology 2013; 144:888-902. [PMID: 23485860 DOI: 10.1053/j.gastro.2013.02.032] [Citation(s) in RCA: 180] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2012] [Revised: 02/20/2013] [Accepted: 02/20/2013] [Indexed: 12/12/2022]
Abstract
Focal nodular hyperplasia (FNH) and hepatocellular adenoma (HCA) are benign hepatocellular tumors that develop most frequently in women without cirrhosis. Genomic approaches have identified signaling pathways related to these benign hepatocyte proliferations. FNH, a polyclonal lesion, is characterized by local vascular abnormalities and heterogeneous activation of Wnt/β-catenin and transforming growth factor β signaling. Four major subgroups of HCAs have been identified based on mutations in specific oncogenes and tumor suppressor genes. Each molecular subtype of HCA has been associated with specific pathways, providing new information about benign tumorigenesis. Key features include metabolic alterations (induced by defects in HNF1A), oncogene-induced inflammation (activation of JAK-STAT signaling in inflammatory adenomas), and an association between activation of Wnt/β-catenin signaling and progression of HCAs in hepatocellular carcinomas. Benign hepatocellular tumors can be classified using immunohistochemical analyses. Studies of genotypes and phenotypes of FNH and HCAs have led to the identification of risk factors and improved invasive and noninvasive diagnostic techniques, evaluation of prognosis, and treatment. We review the molecular pathways involved in benign hepatocyte proliferation and discuss how this basic knowledge has been progressively translated into personalized clinical care.
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Affiliation(s)
- Jean-Charles Nault
- INSERM, UMR-674, Génomique Fonctionnelle des Tumeurs Solides, IUH, Paris, France
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Schmid-Tannwald C, Jiang Y, Dahi F, Rist C, Sethi I, Oto A. Diffusion-weighted MR imaging of focal liver lesions in the left and right lobes: is there a difference in ADC values? Acad Radiol 2013; 20:440-5. [PMID: 23498984 DOI: 10.1016/j.acra.2012.10.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2012] [Revised: 10/27/2012] [Accepted: 10/27/2012] [Indexed: 02/08/2023]
Abstract
RATIONALE AND OBJECTIVES To determine possible differences between the left and right hepatic lobes in apparent diffusion coefficient (ADC) values of benign and malignant focal liver lesions (FLLs) and normal liver parenchyma. MATERIALS AND METHODS Thirty-six patients (16 males, 20 females; mean age 56.8 years) with FLLs of the same etiology in both the left and right hepatic lobes (13 patients with 26 benign FLLs and 23 patients with 46 malignant FLLs) who underwent 1.5T magnetic resonance imaging (MRI) including diffusion-weighted MRI (b values: 0 and 800 seconds/mm) with respiratory gating and without cardiac gating were included in this Health Insurance Portability and Accountability Act-compliant and institutional review board-approved study. ADC values of normal liver parenchyma and FLLs in each hepatic lobe were calculated and compared by using Student's t-test and Wilcoxon signed-rank test, respectively. RESULTS The mean ADC values of normal liver parenchyma, benign FLLs, and malignant FLLs were significantly higher (P < .001, P = .003, and P = .005, respectively) in the left hepatic lobe (1.74 × 10(-3), 1.81 × 10(-3), and 1.48 × 10(-3) mm²/second, respectively) than in the right hepatic lobe (1.48 × 10(-3), 1.54 × 10(-3), and 1.24 × 10(-3) mm²/second, respectively). CONCLUSION ADC values of benign and malignant FLLs calculated from noncardiac-gated DW-MRI are significantly higher in the left hepatic lobe compared with the right hepatic lobe. This may be a limitation for characterization of FLLs based on ADC measurements.
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Focal nodular hyperplasia--a review of myths and truths. J Gastrointest Surg 2011; 15:2275-83. [PMID: 21959783 DOI: 10.1007/s11605-011-1680-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2011] [Accepted: 09/07/2011] [Indexed: 01/31/2023]
Abstract
BACKGROUND Focal nodular hyperplasia (FNH) is a benign hyperplastic lesion of the liver with no known malignant potential. It has generated much interest due to the frequency with which it presents with atypical features on radiological imaging. Often resulting in misdiagnosis. Moreover, the understanding of particular subtypes of this lesion at a molecular level has changed in recent years. This may have implications on how certain subtypes should be managed. PURPOSE This review aims to analyse current literature pertaining to FNH and to provide clinically relevant advice regarding diagnosis and management.
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Marin D, Galluzzo A, Plessier A, Brancatelli G, Valla D, Vilgrain V. Focal nodular hyperplasia-like lesions in patients with cavernous transformation of the portal vein: prevalence, MR findings and natural history. Eur Radiol 2011; 21:2074-82. [DOI: 10.1007/s00330-011-2161-z] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2011] [Accepted: 05/09/2011] [Indexed: 01/02/2023]
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Lewis RB, Lattin GE, Makhlouf HR, Levy AD. Tumors of the liver and intrahepatic bile ducts: radiologic-pathologic correlation. Magn Reson Imaging Clin N Am 2011; 18:587-609, xii. [PMID: 21094457 DOI: 10.1016/j.mric.2010.08.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Primary tumors of the liver can be classified pathologically based on their cell of origin into epithelial tumors, arising from hepatocytes or biliary epithelium, and nonepithelial tumors, including mesenchymal tumors and lymphoma. Characteristic findings on MR imaging can be seen in many cases. This article reviews the MR imaging appearance of these tumors with pathologic correlation.
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Affiliation(s)
- Rachel B Lewis
- Department of Radiologic Pathology, Armed Forces Institute of Pathology, 6825 16th Street NW, Washington, DC 20306-6000, USA.
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Miller FH, Hammond N, Siddiqi AJ, Shroff S, Khatri G, Wang Y, Merrick LB, Nikolaidis P. Utility of diffusion-weighted MRI in distinguishing benign and malignant hepatic lesions. J Magn Reson Imaging 2010; 32:138-47. [PMID: 20578020 DOI: 10.1002/jmri.22235] [Citation(s) in RCA: 133] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
PURPOSE To evaluate apparent diffusion coefficient (ADC) values for characterization of a variety of focal liver lesions and specifically for differentiation of solid benign lesions (focal nodular hyperplasia [FNH] and adenomas) from solid malignant neoplasms (metastases and hepatocellular carcinoma [HCC]) in a large case series. MATERIALS AND METHODS A total of 542 lesions in 382 patients were evaluated. ADC values were measured in 166 hemangiomas, 112 hepatomas, 107 metastases, 95 cysts, 10 abscesses, 43 FNH, and nine adenomas. ADCs of 1.5 and 1.6 (x10(-3) mm(2)/second) were selected as threshold values to separate benign and malignant lesions. Sensitivity, specificity, positive, and negative predictive values (PPV, NPV) were calculated. Comparisons were carried out with studentized range test. RESULTS There was high interobserver agreement in ADC measurements for all lesion types. The mean ADCs for cysts was 3.40 (x10 (-3) mm(2)/second), hemangiomas 2.26, FNH 1.79, adenomas 1.49, abscesses 1.97, HCC 1.53, and metastases 1.50. The mean ADC for benign lesions was 2.50 and for malignant lesions was 1.52. Cysts were easily distinguished from other lesions. There was, however, overlap between solid benign and malignant lesions. CONCLUSION Benign lesions have higher mean ADC values than malignant lesions. However, ADC values of solid benign lesions (FNH and adenomas) are similar to malignant lesions (metastases, HCC) limiting the value of diffusion weighted imaging (DWI) for differentiating solid liver masses.
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Affiliation(s)
- Frank H Miller
- Northwestern University Feinberg School of Medicine, Chicago, Illinois 60611, USA.
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Chung EM, Cube R, Lewis RB, Conran RM. From the archives of the AFIP: Pediatric liver masses: radiologic-pathologic correlation part 1. Benign tumors. Radiographics 2010; 30:801-26. [PMID: 20462995 DOI: 10.1148/rg.303095173] [Citation(s) in RCA: 138] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Benign hepatic tumors in children include lesions that are unique to the pediatric age group and others that are more common in adults. Infantile hemangioendothelioma, or infantile hepatic hemangioma, is a benign vascular tumor that may cause serious clinical complications. It is composed of vascular channels lined by endothelial cells. At imaging, large feeding arteries and draining veins and early, intense, peripheral nodular enhancement with centripetal filling on delayed images are characteristic features. Mesenchymal hamartoma of the liver occurs in young children and is characterized pathologically by mesenchymal proliferation with fluid-containing cysts of varying size and number. The mesenchymal component or cystic component may predominate; this predominance determines the imaging appearance of the tumor. Benign epithelial tumors that are common in adults may infrequently occur in childhood. These include focal nodular hyperplasia (FNH), hepatocellular adenoma, and nodular regenerative hyperplasia. All are composed of hyperplastic hepatocytes similar to surrounding liver parenchyma and may be difficult to discern at imaging. Preferential hepatic arterial phase enhancement helps distinguish FNH and hepatic adenoma from uninvolved liver. Hepatic adenoma often has intracellular fat and a propensity for intratumoral hemorrhage, neither of which are seen in FNH. Unlike adenoma, FNH often contains enough Kupffer cells to show uptake at sulfur colloid scintigraphy. Nodular regenerative hyperplasia is often associated with portal hypertension, which may be evident at imaging. Knowledge of how the pathologic features of these tumors affect their imaging appearances helps radiologists offer an appropriate differential diagnosis and management plan.
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Affiliation(s)
- Ellen M Chung
- Department of Radiology and Radiological Sciences, Edward F. Hebert School of Medicine, Uniformed Services University of the Health Sciences, 4301 Jones Bridge Rd, Bethesda, MD 20814, USA.
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Diagnosis of liver metastases: value of diffusion-weighted MRI compared with gadolinium-enhanced MRI. Eur Radiol 2010; 20:1431-41. [PMID: 20148251 DOI: 10.1007/s00330-009-1695-9] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2009] [Revised: 10/20/2009] [Accepted: 11/16/2009] [Indexed: 02/06/2023]
Abstract
OBJECTIVE The full diagnostic value of diffusion-weighted (DW) MRI in the evaluation of liver metastases remains uncertain. The aim of the present study was to assess the diagnostic accuracy of DW-MRI and contrast-enhanced MRI (CE-MRI) using extracellular gadolinium chelates, with the reference standard established by consensus interpretation of confirmatory imaging and histopathologic data. METHODS MR examinations of 51 patients with extrahepatic malignancies were retrospectively reviewed by two independent observers who assessed DW-MRI and CE-MRI for detection of liver metastases. RESULTS By reference standard, 93 liver lesions (49 metastases and 44 benign lesions) were identified in 27 patients, 11 patients had no liver lesions, and 13 patients had innumerable metastatic and/or benign lesions. There was no difference in diagnostic performance between the two methods for either observer for the diagnosis of metastatic lesions per patient. For per-lesion analysis, sensitivity of DW-MRI was equivalent to CE-MRI for observer 1 (67.3% vs. 63.3%, p = 0.67), but lower for observer 2 (65.3% vs. 83.7%, p = 0.007). By pooling data from both observers, the sensitivity of DW-MRI was 66.3% (65/98) and 73.5% (72/98) for CE-MRI, with no significant difference (p = 0.171). CONCLUSION DW-MRI is a reasonable alternative to CE-MRI for the detection of liver metastases.
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Soussan M, Aubé C, Bahrami S, Boursier J, Valla DC, Vilgrain V. Incidental focal solid liver lesions: diagnostic performance of contrast-enhanced ultrasound and MR imaging. Eur Radiol 2010; 20:1715-25. [PMID: 20069427 DOI: 10.1007/s00330-009-1700-3] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2009] [Revised: 11/14/2009] [Accepted: 11/20/2009] [Indexed: 02/08/2023]
Abstract
OBJECTIVE To prospectively assess the diagnostic performance of contrast-enhanced ultrasound (CEUS) and MR imaging in incidental solid focal liver lesions not characterised on ultrasound. MATERIALS AND METHODS Forty-seven patients with 50 lesions underwent MR imaging and CEUS: 24 focal nodular hyperplasias (FNH), 11 adenomas, 10 haemangiomas, 1 focal fatty change and 4 malignant lesions were identified. Two experienced radiologists randomly reviewed contrast-enhanced MR imaging and CEUS data, and provided the most likely diagnosis. Sensitivity (Se), specificity (Sp), likelihood ratios (LR) and kappa value were calculated. RESULTS A histotype diagnosis was obtained in 66-52% with MR imaging and 52-53% with CEUS, respectively, for both readers. Se, Sp and LR for haemangioma were 100-100, 100-100 and 78-78 with MR imaging and 89-89, 100-100 and 68-70 with CEUS; for FNH with MR imaging they were 88-63, 96-100 and 23-34 and 74-67, 88-96 and 6-17 with CEUS. If the diagnosis of haemangioma was uncertain with CEUS, MR imaging always confirmed the diagnosis. If the diagnosis of FNH was uncertain with either CEUS or MR imaging, the other imaging technique confirmed the diagnosis in approximately half the cases. CONCLUSION Both CEUS and MR imaging have a high diagnostic performance in incidental focal liver lesions and are complementary when diagnosis is uncertain.
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Affiliation(s)
- Michael Soussan
- Department of Radiology, Assistance Publique des Hôpitaux de Paris, APHP, Hôpital Beaujon, Clichy, France
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Coenegrachts K. Magnetic resonance imaging of the liver: New imaging strategies for evaluating focal liver lesions. World J Radiol 2009; 1:72-85. [PMID: 21160723 PMCID: PMC2999307 DOI: 10.4329/wjr.v1.i1.72] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2009] [Revised: 11/12/2009] [Accepted: 11/16/2009] [Indexed: 02/06/2023] Open
Abstract
The early detection of focal liver lesions, particularly those which are malignant, is of utmost importance. The resection of liver metastases of some malignancies (including colorectal cancer) has been shown to improve the survival of patients. Exact knowledge of the number, size, and regional distribution of liver metastases is essential to determine their resectability. Almost all focal liver lesions larger than 10 mm are demonstrated with current imaging techniques but the detection of smaller focal liver lesions is still relatively poor. One of the advantages of magnetic resonance imaging (MRI) of the liver is better soft tissue contrast (compared to other radiologic modalities), which allows better detection and characterization of the focal liver lesions in question. Developments in MRI hardware and software and the availability of novel MRI contrast agents have further improved the diagnostic yield of MRI in lesion detection and characterization. Although the primary modalities for liver imaging are ultrasound and computed tomography, recent studies have suggested that MRI is the most sensitive method for detecting small liver metastatic lesions, and MRI is now considered the pre-operative standard method for diagnosis. Two recent developments in MRI sequences for the upper abdomen comprise unenhanced diffusion-weighted imaging (DWI), and keyhole-based dynamic contrast-enhanced (DCE) MRI (4D THRIVE). DWI allows improved detection (b = 10 s/mm2) of small (< 10 mm) focal liver lesions in particular, and is useful as a road map sequence. Also, using higher b-values, the calculation of the apparent diffusion coefficient value, true diffusion coefficient, D, and the perfusion fraction, f, has been used for the characterization of focal liver lesions. DCE 4D THRIVE enables MRI of the liver with high temporal and spatial resolution and full liver coverage. 4D THRIVE improves evaluation of focal liver lesions, providing multiple arterial and venous phases, and allows the calculation of perfusion parameters using pharmacokinetic models. 4D THRIVE has potential benefits in terms of detection, characterization and staging of focal liver lesions and in monitoring therapy.
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Furlan A, Marin D, Bae KT, Lagalla R, Agnello F, Bazzocchi M, Brancatelli G. Focal liver lesions hyperintense on T1-weighted magnetic resonance images. Semin Ultrasound CT MR 2009; 30:436-49. [PMID: 19842568 DOI: 10.1053/j.sult.2009.07.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
This article reviews focal liver lesions hyperintense on T1-weighted magnetic resonance (MR) images and describes the underlying etiologies associated with their T1 signal intensity. Although focal liver lesions are commonly detected because of their iso- or hypointensity on T1-weighted images, lesions (benign or malignant) may present with T1 hyperintensity when they contain T1 shortening elements--such as fat, hemorrhage, copper, melanin, and highly concentrated proteins. Our discussion includes the description of state-of-the-art T1-weighted MR sequences and the imaging features of lesions on pre- and postcontrast MR images that are characteristic for lesion composition and useful for making accurate diagnosis.
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Affiliation(s)
- Alessandro Furlan
- University of Pittsburgh Medical Center, Department of Radiology, 3362 Fifth Avenue, Pittsburgh, PA 15213, USA.
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Abstract
In 1999, Nguyen et al divided focal nodular hyperplasia (FNH) in 2 groups, the classical and nonclassical. The former also included those cases of FNH with classical characteristics exhibited "on a subtle scale," whereas the latter included among others mainly the telangiectatic FNH (T-FNH) variant. Hepatocellular adenoma (HCA) was classically considered by definition a neoplasm with no ductal or ductular differentiation, but today the spectrum of HCA does include variant 3, which may have CK7+ ductules. Owing to genotypic-phenotypic correlation, T-FNH (synonymous with progressive FNH of others) is not considered yet as part of the spectrum of FNH, instead it is diagnosed as a variant of HCA, which now includes 4 variants. Variant-3, which may contain CK7+ ductules, and is also termed HCA with ductal/ductular differentiation, corresponds to T-FNH. Notwithstanding the nosologic advancement, and outside the "archetypal" types, the differential morphologic diagnosis of spontaneous HCA versus FNH may remain problematic as ductular proliferation in some cases of FNH may be scanty and hard to find. In some histologic overlapping cases of FNH and HCA the morphologic diagnosis may be very difficult or even impossible (especially in small lesions) and molecular biology may be of critical assistance. A prototypical case of surgically resected multiple spontaneous liver cell adenomas of various types, including HCA of T-FNH type and steatotic type, previously interpreted in different ways, affecting a young girl, is presented herein.
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Radiological and histopathological manifestations of hepatocellular nodular lesions concomitant with various congenital and acquired hepatic hemodynamic abnormalities. Jpn J Radiol 2009; 27:53-68. [PMID: 19373534 DOI: 10.1007/s11604-008-0299-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2008] [Accepted: 10/31/2008] [Indexed: 12/25/2022]
Abstract
Congenital and acquired hepatic hemodynamic abnormalities are classified into four categories: hepatic arterial inflow disorder, portal vein inflow disorder, hepatic vein outflow disorder, and presence of a third inflow to the liver. Although their detailed etiology is not fully understood, these hepatic hemodynamic abnormalities may cause the formation of hepatocellular nodules. Recent advances in imaging modalities now enable visualization of these hepatocellular nodules concomitantly with the identification of various congenital and acquired hemodynamic abnormalities. Most of these nodular lesions are benign hyperplastic nodules, such as focal nodular hyperplasia, nodular regenerative hyperplasia, and other types of regenerative nodules. However, neoplastic nodules such as hepatic adenoma and hepatocellular carcinoma may also occur in conjunction with hepatic hemodynamic abnormalities. Distinguishing neoplastic nodules, especially malignant liver tumors, from hyperplastic nodules is important. Detection of intranodular Kupffer cells with superparamagnetic iron oxide enhanced magnetic resonance imaging is a key indicator that a nodule is regenerative rather than neoplastic.
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Abstract
Imaging is a standard part of the evaluation of pediatric liver disease. Advances in MR imaging have improved detection, characterization, and staging of hepatic lesions. This article addresses the MR imaging appearances of various focal hepatic lesions that can present in children. Techniques for performing hepatic MR imaging also are reviewed.
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Affiliation(s)
- Marilyn J Siegel
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, 510 South Kingshighway Boulevard, St. Louis, MO 63110, USA.
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Rebouissou S, Couchy G, Libbrecht L, Balabaud C, Imbeaud S, Auffray C, Roskams T, Bioulac-Sage P, Zucman-Rossi J. The beta-catenin pathway is activated in focal nodular hyperplasia but not in cirrhotic FNH-like nodules. J Hepatol 2008; 49:61-71. [PMID: 18466996 DOI: 10.1016/j.jhep.2008.03.013] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2007] [Revised: 02/25/2008] [Accepted: 03/03/2008] [Indexed: 02/07/2023]
Abstract
BACKGROUND/AIMS Focal nodular hyperplasias (FNHs) are benign liver lesions considered to be a hyperplastic response to increased blood flow in normal liver. In contrast, FNH-like lesions/nodules occur in cirrhotic liver but share similar histopathological features. We conducted a transcriptome analysis to identify biological pathways deregulated in FNH. METHODS Gene expression profiles obtained in FNH and normal livers were compared. Differentially-expressed genes were validated using quantitative-RT-PCR in 70 benign liver tumors including FNH-like lesions. RESULTS Among the deregulated genes in FNHs, 19 displayed physiological restricted distribution in the normal liver. All six perivenous genes were up-regulated in FNH, whereas 13 periportal genes were down-regulated. Almost all these genes are known to be regulated by beta-catenin. Glutamine synthetase was markedly overexpressed in anastomosed areas usually centered on visible veins. Moreover, activated hypophosphorylated beta-catenin protein accumulated in FNH in the absence of activating mutations. These results suggest the zonated activation of the beta-catenin pathway in FNH, whereas the other benign hepatocellular tumors, including FNH-like lesions, demonstrated an entirely different pattern of beta-catenin expression. CONCLUSIONS In FNH, increased activation of the beta-catenin pathway was found restricted to enlarged perivenous areas. FNH-like nodules may have a different pathogenetic origin.
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Affiliation(s)
- Sandra Rebouissou
- Inserm, U674, Génomique fonctionnelle des tumeurs solides, 27 rue Juliette Dodu, Paris F-75010, France
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Okugawa Y, Uchida K, Inoue M, Kawamoto A, Ohtake K, Sakurai H, Uchida K, Isaji S, Miki C, Kusunoki M. Focal nodular hyperplasia in biliary atresia patient after Kasai hepatic portoenterostomy. Pediatr Surg Int 2008; 24:609-12. [PMID: 18084770 DOI: 10.1007/s00383-007-2090-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/13/2007] [Indexed: 01/11/2023]
Abstract
We present the case of a 10-year-old girl with biliary atresia in whom focal nodular hyperplasia (FNH) of the liver occurred following successful "Kasai" hepatic portoenterostomy at the age of 2 months. Her jaundice completely disappeared a few weeks after the operation. A 4-cm diameter liver tumor in segment IV was found when she was 5-years old. Needle biopsy could not establish a definitive diagnosis. Because the tumor size was not changing, she was conservatively followed by abdominal echo at an outpatient clinic. She showed progressive liver dysfunction and ongoing cirrhosis, and so at the age of 10 years, she received living donor liver transplantation at our institute. The tumor was pathologically diagnosed as a FNH. Though a FNH in biliary atresia patients is extremely rare, there are only two cases reported in the literature; it should be considered in the differential diagnosis for a hepatic nodule during a long follow-up course in patients with biliary atresia.
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Affiliation(s)
- Yoshinaga Okugawa
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, 514-8507, Japan.
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Lewin M, Vilgrain V. [Radiological diagnosis of benign liver cell tumors]. ACTA ACUST UNITED AC 2008; 32:304-9; quiz 293, 314. [PMID: 18367357 DOI: 10.1016/j.gcb.2008.02.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- M Lewin
- Département de radiologie, hôpital Saint-Antoine, 184, rue du Faubourg-Saint-Antoine, 75012 Paris, France.
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Parikh T, Drew SJ, Lee VS, Wong S, Hecht EM, Babb JS, Taouli B. Focal liver lesion detection and characterization with diffusion-weighted MR imaging: comparison with standard breath-hold T2-weighted imaging. Radiology 2008; 246:812-22. [PMID: 18223123 DOI: 10.1148/radiol.2463070432] [Citation(s) in RCA: 404] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
PURPOSE To retrospectively compare diffusion-weighted (DW) magnetic resonance (MR) imaging with standard breath-hold T2-weighted MR imaging for focal liver lesion (FLL) detection and characterization, by using consensus evaluation and other findings as the reference standard. MATERIALS AND METHODS Approval for this retrospective HIPAA-compliant study was obtained from the institutional review board; informed consent was waived. Fifty-three consecutive patients (30 men, 23 women; mean age, 60.7 years) with at least one FLL of 1 cm or greater in diameter were evaluated. Two independent observers reviewed DW (b values of 0, 50, and 500 sec/mm(2)) and T2-weighted images for FLL detection and characterization. Reference standard for diagnosis was obtained from consensus review by the two observers of DW, T2-weighted, and dynamic contrast material-enhanced images, pathologic data, and follow-up imaging results. Apparent diffusion coefficient (ADC) was measured for FLLs identified at consensus review. DW and T2-weighted images were compared for FLL detection and characterization by using a binary logistic regression model. Receiver operating characteristic curve analyses were conducted to evaluate the utility of ADC for diagnosis of malignancy. RESULTS Two hundred eleven FLLs (136 malignant, 75 benign) were detected at consensus review. Overall detection rate (averaged for two observers) was significantly higher for DW (87.7%) versus T2-weighted (70.1%) imaging (P < .001). FLL characterization was not significantly different between DW (89.1%) and T2-weighted (86.8%) imaging (P = .51). ADCs of malignant FLLs were significantly lower than those of benign FLLs (P < .001). The area under the curve for diagnosis of malignancy was 0.839, with sensitivity of 74.2%, specificity of 77.3%, positive predictive value of 85.5%, negative predictive value of 62.3%, and accuracy of 75.3%, by using a threshold ADC of less than 1.60 x 10(-3) mm(2)/sec. CONCLUSION DW MR imaging was better than standard breath-hold T2-weighted imaging for FLL detection and was equal to breath-hold T2-weighted imaging for FLL characterization.
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Affiliation(s)
- Tejas Parikh
- Department of Radiology, New York University Medical Center, 530 First Ave, MRI, New York, NY 10016, USA
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Marin D, Brancatelli G, Federle MP, Lagalla R, Catalano C, Passariello R, Midiri M, Vilgrain V. Focal nodular hyperplasia: typical and atypical MRI findings with emphasis on the use of contrast media. Clin Radiol 2008; 63:577-85. [PMID: 18374723 DOI: 10.1016/j.crad.2007.06.011] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2007] [Revised: 06/15/2007] [Accepted: 06/25/2007] [Indexed: 12/15/2022]
Abstract
Focal nodular hyperplasia is a benign hypervascular hepatic tumour, frequently detected in asymptomatic patients undergoing imaging studies for unrelated reasons. Magnetic resonance imaging (MRI) generally allows a confident differential diagnosis with other hypervascular liver lesions, either benign or malignant. In addition, due to the recent development of hepatospecific MRI contrast agents, MRI concomitantly enables functional and morphological information to be obtained, thus providing important clues for the detection and characterization of focal nodular hyperplasia lesions.
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Affiliation(s)
- D Marin
- Department of Radiological Sciences, University of Rome "La Sapienza", Rome, Italy.
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Liu YW, Concejero AM, Chen CL, Cheng YF, Eng HL, Huang TL, Chen TY, Wang CC, Wang SH, Lin CC, Yong CC, Yang CH, Jordan AP, Jawan B. Hepatic pseudotumor in long-standing biliary atresia patients undergoing liver transplantation. Liver Transpl 2007; 13:1545-51. [PMID: 17969188 DOI: 10.1002/lt.21320] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A pseudotumor, giant regenerative nodule, or macroregenerative nodule is an unusual benign hepatic lesion in biliary atresia (BA) patients. This tumor may mimic malignant transformation and may preclude liver transplantation (LT). The clinical and imaging surveillance of patients after the Kasai procedure is therefore an important aspect of management of BA patients. Our objective is to report our experience and describe the incidence, imaging, and pathologic features of pseudotumors in BA patients awaiting LT. From August 1990 to December 2006, 133 LTs for BA were performed. Five (3.8%; 4 female, 1 male) patients were diagnosed with pseudotumor. The patients' records were reviewed. The diagnostic imaging modalities used were abdominal ultrasound (US), computed tomography (CT) scan, and magnetic resonance imaging (MRI). Histologic confirmation of the lesions was obtained in all cases. All underwent the Kasai operation in early infancy. Six of 7 lesions in 4 of 5 patients were demonstrated by pretransplant imaging. Two of 7 tumors were detected by US. Five of 7 lesions were detected by CT, and 5 of 7 lesions were demonstrated by MRI. In 1 patient, the lesion was not seen in the US, CT, or MRI but was found during surgery and confirmed by histology. An additional tumor was found incidentally during histologic examination in a patient previously diagnosed to have 2 tumors by CT and MRI. In another patient diagnosed to have 2 tumors on imaging, pathology revealed only a single tumor. In conclusion, although unusual, pseudotumor should be included in the differential diagnosis of liver masses in BA children.
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Affiliation(s)
- Yueh-Wei Liu
- Liver Transplantation Program, Chang Gung Memorial Hospital-Kaohsiung Medical Center, Chang Gung University College of Medicine, Kaohsiung, Taiwan
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Abstract
Liver masses are very common and most are benign. It is therefore important to avoid unnecessary interventions for benign lesions, while at the same time ensuring accurate diagnosis of hepatic malignancies. Many cancer patients, like the general population, have incidental benign liver lesions. In planning treatment for cancer patients, it is critical to avoid inappropriate treatment decisions based on misdiagnosis of a benign lesion as a metastasis or primary liver malignancy. This article describes the salient imaging features of the common benign liver masses and outlines a general approach to distinguishing between benign and malignant hepatic lesions.
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Affiliation(s)
- Jay P Heiken
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, Missouri 63110, USA.
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Asbach P, Klessen C, Koch M, Hamm B, Taupitz M. Magnetic resonance imaging findings of atypical focal nodular hyperplasia of the liver. Clin Imaging 2007; 31:244-52. [PMID: 17599618 DOI: 10.1016/j.clinimag.2007.03.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2007] [Accepted: 03/15/2007] [Indexed: 11/19/2022]
Abstract
Atypical focal nodular hyperplasia (FNH) of the liver is a diagnostic challenge as a variety of atypical imaging findings can occur in this entity. There is no potential for malignant transformation, making noninvasive diagnosis welcome in order to avoid invasive steps such as biopsy or surgery. The present pictorial review focuses on the atypical presentation of FNH and comments on different types of contrast media available for magnetic resonance imaging of the liver.
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Affiliation(s)
- Patrick Asbach
- Department of Radiology, Charité-Universitätsmedizin Berlin, Charité Campus Mitte, 10117 Berlin, Germany.
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Venturi A, Piscaglia F, Vidili G, Flori S, Righini R, Golfieri R, Bolondi L. Diagnosis and management of hepatic focal nodular hyperplasia. J Ultrasound 2007; 10:116-27. [PMID: 23396642 PMCID: PMC3478711 DOI: 10.1016/j.jus.2007.06.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Focal nodular hyperplasia (FNH) is the second most common benign tumor of the liver, after hemangioma. It is generally found incidentally and is most common in reproductive-aged women, but it also affects males and can be diagnosed at any age. Patients are rarely symptomatic, but FNH sometimes causes epigastric or right upper quadrant pain. The main clinical task is to differentiate it from other hypervascular hepatic lesions such as hepatic adenoma, hepatocellular carcinoma, or hypervascular metastases, but invasive diagnostic procedures can generally be avoided with the appropriate use of imaging techniques. Magnetic resonance (MR) imaging is more sensitive and specific than conventional ultrasonography (US) or computed tomography (CT), but Doppler US and contrast-enhanced US (CEUS) can greatly improve the accuracy in the diagnosis of FNH. Once a correct diagnosis has been made, in most cases there is no indication for surgery, and treatment includes conservative clinical follow-up in asymptomatic patients.
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Affiliation(s)
- A. Venturi
- Department of Internal Medicine and Gastroenterology, Policlinico St. Orsola-Malpighi, University of Bologna, Italy
| | - F. Piscaglia
- Department of Internal Medicine and Gastroenterology, Policlinico St. Orsola-Malpighi, University of Bologna, Italy
| | - G. Vidili
- Department of Internal Medicine and Gastroenterology, Policlinico St. Orsola-Malpighi, University of Bologna, Italy
| | - S. Flori
- Department of Internal Medicine and Gastroenterology, Policlinico St. Orsola-Malpighi, University of Bologna, Italy
| | - R. Righini
- Department of Internal Medicine and Gastroenterology, Policlinico St. Orsola-Malpighi, University of Bologna, Italy
| | - R. Golfieri
- Department of Radiology, Policlinico St. Orsola-Malpighi, University of Bologna, Italy
| | - L. Bolondi
- Department of Internal Medicine and Gastroenterology, Policlinico St. Orsola-Malpighi, University of Bologna, Italy
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