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Matteini F, Cannella R, Garzelli L, Dioguardi Burgio M, Sartoris R, Brancatelli G, Vilgrain V, Ronot M, Vernuccio F. Benign and malignant focal liver lesions displaying rim arterial phase hyperenhancement on CT and MRI. Insights Imaging 2024; 15:178. [PMID: 39020233 PMCID: PMC11254889 DOI: 10.1186/s13244-024-01756-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Accepted: 06/22/2024] [Indexed: 07/19/2024] Open
Abstract
Rim arterial phase hyperenhancement is an imaging feature commonly encountered on contrast-enhanced CT and MRI in focal liver lesions. Rim arterial phase hyperenhancement is a subtype of arterial phase hyperenhancement mainly present at the periphery of lesions on the arterial phase. It is caused by a relative arterialization of the periphery compared with the center of the lesion and needs to be differentiated from other patterns of peripheral enhancement, including the peripheral discontinuous nodular enhancement and the corona enhancement. Rim arterial phase hyperenhancement may be a typical or an atypical imaging presentation of many benign and malignant focal liver lesions, challenging the radiologists during imaging interpretation. Benign focal liver lesions that may show rim arterial phase hyperenhancement may have a vascular, infectious, or inflammatory origin. Malignant focal liver lesions displaying rim arterial phase hyperenhancement may have a vascular, hepatocellular, biliary, lymphoid, or secondary origin. The differences in imaging characteristics on contrast-enhanced CT may be subtle, and a multiparametric approach on MRI may be helpful to narrow the list of differentials. This article aims to review the broad spectrum of focal liver lesions that may show rim arterial phase hyperenhancement, using an approach based on the benign and malignant nature of lesions and their histologic origin. CRITICAL RELEVANCE STATEMENT: Rim arterial phase hyperenhancement may be an imaging feature encountered in benign and malignant focal liver lesions and the diagnostic algorithm approach provided in this educational review may guide toward the final diagnosis. KEY POINTS: Several focal liver lesions may demonstrate rim arterial phase hyperenhancement. Rim arterial phase hyperenhancement may occur in vascular, inflammatory, and neoplastic lesions. Rim arterial phase hyperenhancement may challenge radiologists during image interpretation.
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Affiliation(s)
- Francesco Matteini
- Department of Biomedicine, Neuroscience and Advanced Diagnostics (Bi.N.D.), University Hospital of Palermo, Palermo, Italy
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties (PROMISE), University of Palermo, Palermo, Italy
| | - Roberto Cannella
- Department of Biomedicine, Neuroscience and Advanced Diagnostics (Bi.N.D.), University Hospital of Palermo, Palermo, Italy
| | - Lorenzo Garzelli
- Department of Radiology, Hôpital Beaujon, AP-HP.Nord, Paris, France
- Université Paris Cité, INSERM U1149, "Centre de Recherche sur l'Inflammation"; CRI, Paris, France
| | - Marco Dioguardi Burgio
- Department of Radiology, Hôpital Beaujon, AP-HP.Nord, Paris, France
- Université Paris Cité, INSERM U1149, "Centre de Recherche sur l'Inflammation"; CRI, Paris, France
| | - Riccardo Sartoris
- Department of Radiology, Hôpital Beaujon, AP-HP.Nord, Paris, France
- Université Paris Cité, INSERM U1149, "Centre de Recherche sur l'Inflammation"; CRI, Paris, France
| | - Giuseppe Brancatelli
- Department of Biomedicine, Neuroscience and Advanced Diagnostics (Bi.N.D.), University Hospital of Palermo, Palermo, Italy
| | - Valérie Vilgrain
- Department of Radiology, Hôpital Beaujon, AP-HP.Nord, Paris, France
- Université Paris Cité, INSERM U1149, "Centre de Recherche sur l'Inflammation"; CRI, Paris, France
| | - Maxime Ronot
- Department of Radiology, Hôpital Beaujon, AP-HP.Nord, Paris, France
- Université Paris Cité, INSERM U1149, "Centre de Recherche sur l'Inflammation"; CRI, Paris, France
| | - Federica Vernuccio
- Department of Biomedicine, Neuroscience and Advanced Diagnostics (Bi.N.D.), University Hospital of Palermo, Palermo, Italy.
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Dioguardi Burgio M, Garzelli L, Cannella R, Ronot M, Vilgrain V. Hepatocellular Carcinoma: Optimal Radiological Evaluation before Liver Transplantation. Life (Basel) 2023; 13:2267. [PMID: 38137868 PMCID: PMC10744421 DOI: 10.3390/life13122267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 10/27/2023] [Accepted: 11/24/2023] [Indexed: 12/24/2023] Open
Abstract
Liver transplantation (LT) is the recommended curative-intent treatment for patients with early or intermediate-stage hepatocellular carcinoma (HCC) who are ineligible for resection. Imaging plays a central role in staging and for selecting the best LT candidates. This review will discuss recent developments in pre-LT imaging assessment, in particular LT eligibility criteria on imaging, the technical requirements and the diagnostic performance of imaging for the pre-LT diagnosis of HCC including the recent Liver Imaging Reporting and Data System (LI-RADS) criteria, the evaluation of the response to locoregional therapy, as well as the non-invasive prediction of HCC aggressiveness and its impact on the outcome of LT. We will also briefly discuss the role of nuclear medicine in the pre-LT evaluation and the emerging role of artificial intelligence models in patients with HCC.
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Affiliation(s)
- Marco Dioguardi Burgio
- Department of Radiology, Hôpital Beaujon, AP-HP. Nord, 100 Boulevard du Général Leclerc, 92110 Clichy, France (V.V.)
- Centre de Recherche sur l’Inflammation, UMR1149, Université Paris Cité, 75018 Paris, France
| | - Lorenzo Garzelli
- Service d’Imagerie Medicale, Centre Hospitalier de Cayenne, Avenue des Flamboyants, Cayenne 97306, French Guiana
| | - Roberto Cannella
- Department of Biomedicine, Neuroscience and Advanced Diagnostics (Bi.N.D.), University Hospital “Paolo Giaccone”, Via del Vespro 129, 90127 Palermo, Italy
| | - Maxime Ronot
- Department of Radiology, Hôpital Beaujon, AP-HP. Nord, 100 Boulevard du Général Leclerc, 92110 Clichy, France (V.V.)
- Centre de Recherche sur l’Inflammation, UMR1149, Université Paris Cité, 75018 Paris, France
| | - Valérie Vilgrain
- Department of Radiology, Hôpital Beaujon, AP-HP. Nord, 100 Boulevard du Général Leclerc, 92110 Clichy, France (V.V.)
- Centre de Recherche sur l’Inflammation, UMR1149, Université Paris Cité, 75018 Paris, France
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Renzulli M, Brandi N, Argalia G, Brocchi S, Farolfi A, Fanti S, Golfieri R. Morphological, dynamic and functional characteristics of liver pseudolesions and benign lesions. Radiol Med 2022; 127:129-144. [PMID: 35028886 DOI: 10.1007/s11547-022-01449-w] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 12/30/2021] [Indexed: 12/21/2022]
Abstract
Hepatocellular carcinoma (HCC) is the third leading cause of cancer-related deaths worldwide and one of the most common causes of death among patients with cirrhosis, developing in 1-8% of them every year, regardless of their cirrhotic stage. The radiological features of HCC are almost always sufficient for reaching the diagnosis; thus, histological confirmation is rarely needed. However, the study of cirrhotic livers remains a challenge for radiologists due to the developing of fibrous and regenerative tissue that cause the distortion of normal liver parenchyma, changing the typical appearances of benign lesions and pseudolesions, which therefore may be misinterpreted as malignancies. In addition, a correct distinction between pseudolesions and malignancy is crucial to allow appropriate targeted therapy and avoid treatment delays.The present review encompasses technical pitfalls and describes focal benign lesions and pseudolesions that may be misinterpreted as HCC in cirrhotic livers, providing the imaging features of regenerative nodules, large regenerative nodules, siderotic nodules, hepatic hemangiomas (including rapidly filling and sclerosed hemangiomas), segmental hyperplasia, arterioportal shunts, focal confluent fibrosis and focal fatty changes. Lastly, the present review explores the most promising new imaging techniques that are emerging and that could help radiologists differentiate benign lesions and pseudolesions from overt HCC.
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Affiliation(s)
- Matteo Renzulli
- Department of Radiology, IRCCS Azienda Ospedaliero-Universitaria Di Bologna, Via Albertoni 15, Bologna, Italia.
| | - Nicolò Brandi
- Department of Radiology, IRCCS Azienda Ospedaliero-Universitaria Di Bologna, Via Albertoni 15, Bologna, Italia
| | - Giulia Argalia
- Division of Nuclear Medicine, IRCCS Azienda Ospedaliero-Universitaria Di Bologna, Bologna, Italy
| | - Stefano Brocchi
- Department of Radiology, IRCCS Azienda Ospedaliero-Universitaria Di Bologna, Via Albertoni 15, Bologna, Italia
| | - Andrea Farolfi
- Division of Nuclear Medicine, IRCCS Azienda Ospedaliero-Universitaria Di Bologna, Bologna, Italy
| | - Stefano Fanti
- Division of Nuclear Medicine, IRCCS Azienda Ospedaliero-Universitaria Di Bologna, Bologna, Italy
| | - Rita Golfieri
- Department of Radiology, IRCCS Azienda Ospedaliero-Universitaria Di Bologna, Via Albertoni 15, Bologna, Italia
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Enhancing capsule in hepatocellular carcinoma: intra-individual comparison between CT and MRI with extracellular contrast agent. Diagn Interv Imaging 2021; 102:735-742. [PMID: 34284951 DOI: 10.1016/j.diii.2021.06.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 06/10/2021] [Accepted: 06/12/2021] [Indexed: 12/12/2022]
Abstract
PURPOSE The purpose of this study was to compare the value of contrast-enhanced computed tomography (CT) to that of magnetic resonance imaging obtained with extracellular contrast agent (ECA-MRI) for the diagnosis of a tumor capsule in hepatocellular carcinoma (HCC) using histopathologic findings as the standard of reference. MATERIALS AND METHODS This retrospective study included patients with pathologically-proven resected HCCs with available preoperative contrast-enhanced CT and ECA-MRI examinations. Two blinded radiologists independently reviewed contrast-enhanced CT and ECA-MRI examinations to assess the presence of an enhancing capsule. The histopathological analysis of resected specimens was used as reference for the diagnosis of a tumor capsule. The sensitivity and specificity of CT and ECA-MRI for the diagnosis of a tumor capsule were determined, and an intra-individual comparison of imaging modalities was performed using McNemar test. Inter-reader agreement was assessed using Kappa test. RESULTS The study population included 199 patients (157 men, 42 women; mean age: 61.3 ± 13.0 [SD] years) with 210 HCCs (mean size 56.7 ± 43.7 [SD] mm). A tumor capsule was present in 157/210 (74.8%) HCCs at histopathologic analysis. Capsule enhancement was more frequently visualized on ECA-MRI (R1, 68.6%; R2, 71.9%) than on CT (R1, 44.3%, P < 0.001; R2, 47.6%, P < 0.001). The sensitivity of ECA-MRI was better for the diagnosis of histopathological tumor capsule (R1, 76.4%; R2, 79.6%; P < 0.001), while CT had a greater specificity (R1, 84.9%; R2, 83.0%; P < 0.001). Inter-reader agreement was moderate both on CT (kappa = 0.55; 95% confidence interval [CI]: 0.43-0.66) and ECA-MRI (kappa = 0.57; 95% CI: 0.45-0.70). CONCLUSION Capsule enhancement was more frequently visualized on ECA-MRI than on CT. The sensitivity of ECA-MRI was greater than that of CT, but the specificity of CT was better than that of ECA-MRI.
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Subramanian M, Low HM, Kim MJ, Tan CH. Benign focal liver lesions masquerading as primary liver cancers on MRI. ACTA ACUST UNITED AC 2021; 26:168-175. [PMID: 32229432 DOI: 10.5152/dir.2019.19235] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Hepatocellular carcinoma (HCC) and intrahepatic cholangiocarcinoma (ICC) are the most common primary liver malignancies. HCC and ICC have characteristic imaging findings, but a number of benign entities can appear similar and can cause diagnostic dilemma. Ideally, accurate and timely diagnosis of these conditions can help the patient to avoid a needle biopsy or even unnecessary treatment. In this article, we present various benign liver lesions that display imaging characteristics that are similar to HCC and ICC on magnetic resonance imaging (MRI) and discuss salient features that may assist in accurate diagnosis.
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Affiliation(s)
| | - Hsien Min Low
- Department of Diagnostic Radiology, Tan Tock Seng Hospital, Novena, Singapore
| | - Myeong-Jin Kim
- Department of Diagnostic Radiology, Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - Cher Heng Tan
- Department of Diagnostic Radiology, Tan Tock Seng Hospital, Novena, Singapore
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Renzulli M, Brocchi S, Ierardi AM, Milandri M, Pettinari I, Lucidi V, Balacchi C, Muratori P, Marasco G, Vara G, Tovoli F, Granito A, Carrafiello G, Piscaglia F, Golfieri R. Imaging-based diagnosis of benign lesions and pseudolesions in the cirrhotic liver. Magn Reson Imaging 2021; 75:9-20. [PMID: 32926993 DOI: 10.1016/j.mri.2020.09.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 09/07/2020] [Accepted: 09/08/2020] [Indexed: 02/07/2023]
Abstract
Liver cirrhosis is a leading cause of death worldwide, with 1-year mortality rates of up to 57% in decompensated patients. Hepatocellular carcinoma (HCC) is the most common primary tumor in cirrhotic livers and the second leading cause of cancer-related mortality worldwide. Annually, up to 8% of patients with cirrhosis develop HCC. The diagnosis of HCC rarely requires histological confirmation: in fact, according to the most recent guidelines, the imaging features of HCC are almost always sufficient for a certain diagnosis. Thus, the role of the radiologist is pivotal because the accurate detection and characterization of focal liver lesions in patients with cirrhosis are essential in improving clinical outcomes. Despite recent technical innovations in liver imaging, several issues remain for radiologists regarding the differentiation of HCC from other hepatic lesions, particularly benign lesions and pseudolesions. It is important to avoid misdiagnosis of benign liver lesions as HCC (false-positive cases) because this diagnostic misinterpretation may lead to ineligibility of a patient for potentially curative treatments or inappropriate assignment of high priority scores to patients on waiting lists for liver transplantation. This review presents a pocket guide that could be useful for the radiologist in the diagnosis of benign lesions and pseudolesions in cirrhotic livers, highlighting the imaging features that help in making the correct diagnosis of macroregenerative nodules; siderotic nodules; arterioportal shunts; hemangiomas, including fast-filling hemangiomas, hemangiomas with pseudowashout, and sclerosed hemangiomas; confluent fibrosis; pseudomasses in chronic portal vein thrombosis; and focal fatty changes.
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Affiliation(s)
- Matteo Renzulli
- Department of Radiology, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Via Albertoni 15, Bologna, Italy.
| | - Stefano Brocchi
- Department of Radiology, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Via Albertoni 15, Bologna, Italy
| | - Anna Maria Ierardi
- Unit of Radiology, IRCCS Cà Granda, Ospedale Maggiore Policlinico, Milan, Italy
| | - Matteo Milandri
- Department of Radiology, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Via Albertoni 15, Bologna, Italy
| | - Irene Pettinari
- Department of Radiology, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Via Albertoni 15, Bologna, Italy
| | - Vincenzo Lucidi
- Department of Radiology, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Via Albertoni 15, Bologna, Italy
| | - Caterina Balacchi
- Department of Radiology, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Via Albertoni 15, Bologna, Italy
| | - Paolo Muratori
- Department of the Science for the quality of life (QUVI), University of Bologna, Bologna, Italy
| | - Giovanni Marasco
- Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Giulio Vara
- Department of Radiology, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Via Albertoni 15, Bologna, Italy
| | - Francesco Tovoli
- Unit of Internal Medicine, Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Alessandro Granito
- Unit of Internal Medicine, Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | | | - Fabio Piscaglia
- Unit of Internal Medicine, Department of Medical and Surgical Sciences, University of Bologna, Bologna, Italy
| | - Rita Golfieri
- Department of Radiology, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Via Albertoni 15, Bologna, Italy
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Paulatto L, Dioguardi Burgio M, Sartoris R, Beaufrère A, Cauchy F, Paradis V, Vilgrain V, Ronot M. Colorectal liver metastases: radiopathological correlation. Insights Imaging 2020; 11:99. [PMID: 32844319 PMCID: PMC7447704 DOI: 10.1186/s13244-020-00904-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 08/04/2020] [Indexed: 02/07/2023] Open
Abstract
With the development of chemotherapy regimens, targeted therapies, and hepatic surgery, the survival of patients with colorectal liver metastases (CRLM) has dramatically improved. Imaging plays a central role for the diagnosis, staging, and treatment allocation in these patients. To interpret CRLM on imaging, radiologists must be familiar with the main imaging features of untreated tumors as well as the modifications induced by systemic therapies, and their meaning in relation to pathological tumor response and tumor biology. CRLM have the same histological features as the primary tumor. Most are “non-otherwise specified” (NOS) adenocarcinomas. The mucinous tumor is the most common of the rare subtypes. In NOS tumors, imaging usually differentiates central areas of necrosis from peripheral proliferating tumors and desmoplastic reaction. Areas of mucin mixed with fibrosis are seen in mucinous subtypes to help differentiate the metastases from other tumors cysts or hemangiomas. After treatment, the viable tumor is gradually replaced by ischemic-like necrosis and fibrosis, and remnants cells are mainly located on the periphery of tumors. Imaging can help predict the degree of tumor response, but changes can be difficult to differentiate from the pretherapeutic appearance. When chemotherapy is interrupted or in case of resistance to treatment, a peripheral infiltrating halo of tumor growth may appear. The purpose of the article is to illustrate the significance of the imaging features of colorectal liver metastases during systemic therapy, using radiopathological correlations.
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Affiliation(s)
- Luisa Paulatto
- Department of Radiology, University Hospitals Paris Nord Val de Seine, Beaujon, Hauts-de-Seine, Clichy, France
| | - Marco Dioguardi Burgio
- Department of Radiology, University Hospitals Paris Nord Val de Seine, Beaujon, Hauts-de-Seine, Clichy, France.,Université de Paris, Paris, France.,INSERM U1149, CRI, Paris, France
| | - Riccardo Sartoris
- Department of Radiology, University Hospitals Paris Nord Val de Seine, Beaujon, Hauts-de-Seine, Clichy, France.,Université de Paris, Paris, France.,INSERM U1149, CRI, Paris, France
| | - Aurélie Beaufrère
- INSERM U1149, CRI, Paris, France.,Department of Pathology, University Hospitals Paris Nord Val de Seine, Beaujon, Hauts-de-Seine, Clichy, France
| | - François Cauchy
- Department of HPB Surgery, University Hospitals Paris Nord Val de Seine, Beaujon, Hauts-de-Seine, Clichy, France
| | - Valérie Paradis
- INSERM U1149, CRI, Paris, France.,Department of Pathology, University Hospitals Paris Nord Val de Seine, Beaujon, Hauts-de-Seine, Clichy, France
| | - Valérie Vilgrain
- Department of Radiology, University Hospitals Paris Nord Val de Seine, Beaujon, Hauts-de-Seine, Clichy, France.,Université de Paris, Paris, France.,INSERM U1149, CRI, Paris, France
| | - Maxime Ronot
- Department of Radiology, University Hospitals Paris Nord Val de Seine, Beaujon, Hauts-de-Seine, Clichy, France. .,Université de Paris, Paris, France. .,INSERM U1149, CRI, Paris, France.
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Klompenhouwer AJ, de Man RA, Dioguardi Burgio M, Vilgrain V, Zucman‐Rossi J, Ijzermans JNM. New insights in the management of Hepatocellular Adenoma. Liver Int 2020; 40:1529-1537. [PMID: 32464711 PMCID: PMC7383747 DOI: 10.1111/liv.14547] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 04/30/2020] [Accepted: 05/21/2020] [Indexed: 12/12/2022]
Abstract
Hepatocellular adenoma (HCA) are benign liver tumours that may be complicated by haemorrhage or malignant transformation to hepatocellular carcinoma. Epidemiological data are fairly outdated, but it is likely to assume that the incidence has increased over the past decades as HCA are more often incidentally found due to the more widespread use of imaging techniques and the increased incidence of obesity. Various molecular subgroups have been described. Each of these molecular subgroups are defined by specific gene mutations and pathway activations. Additionally, they are all related to specific risk factors and show a various biological behaviour. These molecular subgroups may be identified using immunohistochemistry and molecular characterization. Contrast-enhanced MRI is the recommended imaging modality to analyse patients with suspected hepatocellular adenoma allowing to determine the subtype in up to 80%. Surgical resection remains to be the golden standard in treating HCA, although resection is deemed unnecessary in a large number of cases, as studies have shown that the majority of HCA will regress over time without complications such as haemorrhage or malignant transformation occurring. It is preferable to treat patients with suspected HCA in high volume centres with combined expertise of liver surgeons, hepatologists, radiologists and (molecular) pathologists.
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Affiliation(s)
| | - Robert A. de Man
- Department of Gastroenterology and HepatologyErasmus MC University Medical CenterRotterdamthe Netherlands
| | - Marco Dioguardi Burgio
- Department of RadiologyHauts‐de‐SeineUniversity Hospitals Paris Nord Val de SeineBeaujon, APHPClichyFrance,Centre de Recherche sur l'inflammation (CRI)INSERM U1149et Université de ParisParisFrance
| | - Valerie Vilgrain
- Department of RadiologyHauts‐de‐SeineUniversity Hospitals Paris Nord Val de SeineBeaujon, APHPClichyFrance,Centre de Recherche sur l'inflammation (CRI)INSERM U1149et Université de ParisParisFrance
| | - Jessica Zucman‐Rossi
- Centre de Recherche des CordeliersSorbonne Université, INSERMUniversité de ParisParisFrance,Oncology DepartmentAPHPHôpital européen Georges PompidouParisFrance
| | - Jan N. M. Ijzermans
- Department of SurgeryErasmus MC University Medical CenterRotterdamthe Netherlands
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Collision of hepatocellular nodules in vascular livers: A medical challenge. Clin Res Hepatol Gastroenterol 2018; 42:e83-e85. [PMID: 30145279 DOI: 10.1016/j.clinre.2017.11.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 10/30/2017] [Accepted: 11/10/2017] [Indexed: 02/04/2023]
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10
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Ronot M, Dioguardi Burgio M, Purcell Y, Pommier R, Brancatelli G, Vilgrain V. Focal lesions in cirrhosis: Not always HCC. Eur J Radiol 2017; 93:157-168. [PMID: 28668410 DOI: 10.1016/j.ejrad.2017.05.040] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 05/25/2017] [Accepted: 05/26/2017] [Indexed: 02/07/2023]
Abstract
Even though most hepatocellular carcinomas (HCC) develop in the setting of cirrhosis, numerous other focal liver lesions and pseudolesions may be encountered. The role of the radiologist is therefore to differentiate these lesions from HCC to avoid under- and overdiagnosis. There are several ways of classifying these lesions: those which predate the development of fibrosis and cirrhosis (cystic lesions, hemangioma), those related to or a consequence of cirrhosis (regenerative nodules, dysplastic nodules, focal fibrosis, peribiliary cysts, shunts, or even cholangiocarcinoma), and those related to the underlying cause of chronic liver disease (lymphoma). Finally, some may develop independently (liver metastases). From an imaging point of view, it is important to remember that the imaging features of pre-existing lesions are not dramatically changed by cirrhosis. Differentiating non-HCC from HCC requires not only an understanding of the multi-step process of hepatocarcinogenesis, but also the importance of medical history, and of complimentary imaging modalities, namely computed tomography (CT) and magnetic resonance imaging (MRI). This review article gives an overview of the imaging features of benign and malignant non-HCC focal liver lesions in the setting of cirrhosis, with a focus on CT and MR imaging.
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Affiliation(s)
- Maxime Ronot
- Hopitaux Universitaires Paris Nord Val de Seine, Beaujon, Clichy, Hauts-de-Seine, France; University Paris Diderot, Sorbonne Paris Cité, Paris, France; INSERM U1149, centre de recherche biomédicale Bichat-Beaujon, CRB3, Paris, France.
| | - Marco Dioguardi Burgio
- Hopitaux Universitaires Paris Nord Val de Seine, Beaujon, Clichy, Hauts-de-Seine, France; University Paris Diderot, Sorbonne Paris Cité, Paris, France; INSERM U1149, centre de recherche biomédicale Bichat-Beaujon, CRB3, Paris, France
| | - Yvonne Purcell
- Hopitaux Universitaires Paris Nord Val de Seine, Beaujon, Clichy, Hauts-de-Seine, France
| | - Romain Pommier
- Hopitaux Universitaires Paris Nord Val de Seine, Beaujon, Clichy, Hauts-de-Seine, France; University Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Giuseppe Brancatelli
- Section of Radiological Sciences, Department of Biopathology and Medical Biotechnologies Di.Bi.Med. University of Palermo, Palermo, Italy
| | - Valérie Vilgrain
- Hopitaux Universitaires Paris Nord Val de Seine, Beaujon, Clichy, Hauts-de-Seine, France; University Paris Diderot, Sorbonne Paris Cité, Paris, France; INSERM U1149, centre de recherche biomédicale Bichat-Beaujon, CRB3, Paris, France
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