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Abstract
Pyogenic liver abscesses (PLAs) are a suppurative infection of the hepatic parenchyma responsible for significant morbidity and mortality. PLAs are categorized into a variety of mechanisms: (1) via the portal vein, (2) through the biliary tract, (3) via the hepatic artery, (4) from trauma, (5) contiguously via direct extension, and (6) cryptogenically. The pathogenesis of PLA, which informs treatment, can often be discerned based on host factors, clinical presentation, and causative microorganisms. The Streptococcus anginosus group, hypervirulent Klebsiella pneumoniae , and multidrug-resistant gram-negative pathogens have emerged as microbiologically challenging organisms to treat. The identification of hypervirulent K. pneumoniae should prompt for assessment for metastatic spread and consideration of prolonged antimicrobial treatment. Abdominal imaging is indispensable in characterizing PLAs and facilitating source control interventions. Source control remains the most critical aspect of PLA management, followed by antimicrobial therapy. Empiric antibiotics for PLAs are informed by the suspected etiology of PLA formation. Duration of antimicrobial therapy is individualized and dependent on multiple components, including the success of achieving source control, host factors, mechanism of PLA development, and the illness course of the individual-factoring in clinical, biochemical, and radiographic parameters.
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Affiliation(s)
- John C Lam
- Division of Infectious Diseases, Department of Medicine, University of California Los Angeles, Los Angeles, CA
| | - William Stokes
- Provincial Laboratory for Public Health, Alberta Precision Laboratories, Calgary
- Department of Pathology and Laboratory Medicine, University of Alberta
- Division of Infectious Diseases, Department of Medicine, University of Alberta, Edmonton, AB, Canada
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Chen K, Dong Y, Zhang W, Han H, Mao F, Zhang H, Wang W. Ultrasound-Guided Coarse Needle Biopsy Diagnosed Isolated Hepatic Malignant Melanoma with Undetermined Origin in TB Patient: A Case Report. Diagnostics (Basel) 2022; 13:diagnostics13010042. [PMID: 36611333 PMCID: PMC9818511 DOI: 10.3390/diagnostics13010042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Revised: 12/20/2022] [Accepted: 12/21/2022] [Indexed: 12/25/2022] Open
Abstract
Isolated hepatic malignant melanoma with undetermined origin is relatively rare and the imaging findings vary significantly in published studies. In this report, we described an elderly male patient with pulmonary tuberculosis who was diagnosed with isolated hepatic malignant melanoma with undetermined origin by ultrasound-guided percutaneous coarse needle biopsy (US-CNB). The hepatic melanoma was detected accidentally on chest CT. On contrast-enhanced ultrasound (CEUS), it presented an enhancement pattern of fast washin and slow washout. However, on magnetic resonance imaging (CEMRI), it showed non-rim hyperenhancement in the arterial phase but hypointensity in the late phase, mimicking hepatocellular carcinoma. With inconsistent results, the patient underwent fluorine-18-fluro-2-deoxy-D-glucose-positron emission tomography/computed tomography (18F-FDG-PET/CT). The mass showed mild 18F-FDG uptake with SUVmax of 4.7, and hypermetabolic nodules were observed in the lung, chest wall, thoracic vertebra, and pelvis. Due to the advanced stage of the tumor, US-CNB was performed to acquire a pathological diagnosis. The immunohistochemical staining suggested malignant melanoma. Of note, no primary tumor was revealed. Finally, the patient refused systemic therapy and died from tumor progression seven months later. Hence, CEUS and CEMRI is fundamental in the diagnosis of hepatic melanoma, and PET-CT is helpful in clinical staging. For controversial results, US-CNB is required to establish the pathological diagnosis.
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Affiliation(s)
- Kailing Chen
- Department of Ultrasound, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Yi Dong
- Department of Ultrasound, Zhongshan Hospital, Fudan University, Shanghai 200032, China
- Department of Ultrasound, Xinhua Hospital Affiliated to Shanghai Jiao Tong Universitity School of Medicine, Shanghai 200092, China
| | - Weibin Zhang
- Department of Ultrasound, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Hong Han
- Department of Ultrasound, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Feng Mao
- Department of Ultrasound, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Hui Zhang
- Department of Ultrasound, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Wenping Wang
- Department of Ultrasound, Zhongshan Hospital, Fudan University, Shanghai 200032, China
- Correspondence: ; Tel.: +86-021-64041990-2474; Fax: +86-021-64220319
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Wendt S, Lübbert C, Karlas T. Klebsiellen-Leberabszess. ZEITSCHRIFT FÜR GASTROENTEROLOGIE 2022. [DOI: 10.1055/a-1801-3748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Riedesel EL, Richer EJ, Taylor SD, Tao T, Gagnon MH, Braithwaite KA, Alazraki AL, Khanna G. Pediatric Hepatic Cystic Lesions: Differential Diagnosis and Multimodality Imaging Approach. Radiographics 2022; 42:1514-1531. [PMID: 35839138 DOI: 10.1148/rg.220006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
When a pediatric hepatic cystic lesion is identified at imaging, the differential diagnosis may be broad, including developmental, infectious, neoplastic, and posttraumatic or iatrogenic causes. The location of a cystic lesion and its number, size, composition, and relationship to the biliary system are features that help in narrowing the differential diagnosis. An incidentally detected simple hepatic cyst is the most commonly encountered. Ciliated foregut cysts are typically located in hepatic segment IVa. The presence of multiple cysts should raise suspicion for fibropolycystic liver disease, a group of related lesions-including biliary hamartoma and choledochal cyst-caused by abnormal embryologic development of the ductal plate. Communication of the cystic lesion with the biliary tree can confirm the diagnosis of choledochal cyst. In a neonate with jaundice, a cystic lesion at the porta hepatis should raise suspicion for choledochal cyst versus cystic biliary atresia. Hepatic abscess can appear cystlike, though typically with internal contents. In an immunocompromised child, multiple cystlike lesions should raise concern for fungal microabscesses. A complex cystic mass in a young child should raise suspicion for mesenchymal hamartoma, which can evolve into undifferentiated embryonal sarcoma if untreated. Hepatic hematoma and biloma can appear cystlike in children with a history of trauma or recent intervention. In neonates with an umbilical vein catheter (UVC), an intrahepatic cyst along the course of the UVC should raise concern for infusate extravasation. Familiarity with imaging findings and clinical features is essential for achieving accurate diagnosis of pediatric hepatic cystic lesions, which in turn can guide appropriate clinical management. Online supplemental material is available for this article. ©RSNA, 2022.
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Affiliation(s)
- Erica L Riedesel
- From the Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, Ga (E.L.R., E.J.R., S.D.T., M.H.G., K.A.B., A.L.A., G.K.); Department of Radiology, Children's Healthcare of Atlanta, 1405 Clifton Road NE, Atlanta, GA 30322 (E.L.R., E.J.R., S.D.T., K.A.B., A.L.A., G.K.); and Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Mo (T.T.)
| | - Edward J Richer
- From the Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, Ga (E.L.R., E.J.R., S.D.T., M.H.G., K.A.B., A.L.A., G.K.); Department of Radiology, Children's Healthcare of Atlanta, 1405 Clifton Road NE, Atlanta, GA 30322 (E.L.R., E.J.R., S.D.T., K.A.B., A.L.A., G.K.); and Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Mo (T.T.)
| | - Susan D Taylor
- From the Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, Ga (E.L.R., E.J.R., S.D.T., M.H.G., K.A.B., A.L.A., G.K.); Department of Radiology, Children's Healthcare of Atlanta, 1405 Clifton Road NE, Atlanta, GA 30322 (E.L.R., E.J.R., S.D.T., K.A.B., A.L.A., G.K.); and Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Mo (T.T.)
| | - Ting Tao
- From the Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, Ga (E.L.R., E.J.R., S.D.T., M.H.G., K.A.B., A.L.A., G.K.); Department of Radiology, Children's Healthcare of Atlanta, 1405 Clifton Road NE, Atlanta, GA 30322 (E.L.R., E.J.R., S.D.T., K.A.B., A.L.A., G.K.); and Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Mo (T.T.)
| | - Marie-Helene Gagnon
- From the Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, Ga (E.L.R., E.J.R., S.D.T., M.H.G., K.A.B., A.L.A., G.K.); Department of Radiology, Children's Healthcare of Atlanta, 1405 Clifton Road NE, Atlanta, GA 30322 (E.L.R., E.J.R., S.D.T., K.A.B., A.L.A., G.K.); and Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Mo (T.T.)
| | - Kiery A Braithwaite
- From the Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, Ga (E.L.R., E.J.R., S.D.T., M.H.G., K.A.B., A.L.A., G.K.); Department of Radiology, Children's Healthcare of Atlanta, 1405 Clifton Road NE, Atlanta, GA 30322 (E.L.R., E.J.R., S.D.T., K.A.B., A.L.A., G.K.); and Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Mo (T.T.)
| | - Adina L Alazraki
- From the Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, Ga (E.L.R., E.J.R., S.D.T., M.H.G., K.A.B., A.L.A., G.K.); Department of Radiology, Children's Healthcare of Atlanta, 1405 Clifton Road NE, Atlanta, GA 30322 (E.L.R., E.J.R., S.D.T., K.A.B., A.L.A., G.K.); and Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Mo (T.T.)
| | - Geetika Khanna
- From the Department of Radiology and Imaging Sciences, Emory University School of Medicine, Atlanta, Ga (E.L.R., E.J.R., S.D.T., M.H.G., K.A.B., A.L.A., G.K.); Department of Radiology, Children's Healthcare of Atlanta, 1405 Clifton Road NE, Atlanta, GA 30322 (E.L.R., E.J.R., S.D.T., K.A.B., A.L.A., G.K.); and Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis, Mo (T.T.)
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Francica G. Pyogenic liver abscess: contrast-enhanced ultrasound allows morpho-evolutive classification and guides personalized management. EXPLORATION OF MEDICINE 2022. [DOI: 10.37349/emed.2022.00093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Aim: The aim of this study is to propose a contrast-enhanced ultrasound (CEUS)-based morphologic classification of pyogenic liver abscess (PLA) reflecting different evolutive stages and to assess the added value of CEUS in the management of PLA.
Methods: Forty-four PLAs of different etiologies in 44 patients (male/female = 24/20; mean age 66 ± 14.7 years) were evaluated with ultrasound (US) B-mode and CEUS (using SonoVue). PLAs were mainly located in the right lobe (n = 28, 63.6%) with a mean diameter of 6.8 cm [standard deviation (SD) ± 3.2, range 1.7–15 cm]. Conventional US findings were categorized as the presence and extension of liquified areas, echogenicity and echostructure of the index lesion. Peripheral hyperenhancing rim, transient segmental enhancement, hyperenhancing septa and “honeycomb” aspect were considered PLA hallmarks in the arterial phase after contrast agent injection. CEUS results were judged as clinically relevant if they modified the approach to percutaneous treatment in comparison with pre-operative US B-mode findings.
Results: CEUS was superior to US B-mode as to depiction of PLA internal echostructure and enabled identification of 4 evolutive stages of PLA: type I (tumor-like), type II (“honeycomb”), type III (multiloculated with incomplete septa), and type IV (cystic-like). In 22 cases (67.4%) out of 34 who underwent percutaneous treatment, the operator tailored percutaneous approach according to PLA internal echostructure observed during CEUS exam.
Conclusions: CEUS depicts the internal structure of PLA so allowing a morpho-evolutive classification of PLA and provides invaluable information for immediately tailoring the management to the single case. By showing the structure of PLA more precisely, CEUS allows a morpho-evolutive PLA classification and guides tailored management in the single case.
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Affiliation(s)
- Giampiero Francica
- Interventional Ultrasound Unit, Pineta Grande Hospital, 81030 Castel Volturno (CE), Italy
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Michels G, Horn R, Helfen A, Hagendorff A, Jung C, Hoffmann B, Jaspers N, Kinkel H, Greim CA, Knebel F, Bauersachs J, Busch HJ, Kiefl D, Spiel AO, Marx G, Dietrich CF. [Standardized contrast-enhanced ultrasound (CEUS) in clinical acute and emergency medicine and critical care (CEUS Acute) : Consensus statement of DGIIN, DIVI, DGINA, DGAI, DGK, ÖGUM, SGUM and DEGUM]. Med Klin Intensivmed Notfmed 2022; 117:1-23. [PMID: 35006320 DOI: 10.1007/s00063-021-00891-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The present document describes the possible applications of contrast-enhanced ultrasound (CEUS) in emergency examinations. Guidelines on contrast medium ultrasound in acute and emergency care and intensive care medicine have not yet been published. Evidence-based CEUS guidelines were first provided by the European Federation of Societies for Ultrasound in Medicine and Biology (EFSUMB) and the World Federation for Ultrasound in Medicine and Biology (WFUMB). The presented recommendations describe the possible applications and protocols of CEUS in acute care.
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Affiliation(s)
- Guido Michels
- Klinik für Akut- und Notfallmedizin, St.-Antonius-Hospital gGmbH, Eschweiler, Deutschland. .,Klinik für Akut- und Notfallmedizin, St.-Antonius-Hospital gGmbH, Akademisches Lehrkrankenhaus der RWTH Aachen, Dechant-Deckers-Str. 8, 52249, Eschweiler, Deutschland.
| | - Rudolf Horn
- Center da sandà Val Müstair, Notfallmedizin, Sta. Maria Val Müstair, Schweiz
| | - Andreas Helfen
- St.-Marien-Hospital Lünen, Medizinische Klinik I, Katholisches Klinikum Lünen Werne GmbH, Lünen, Deutschland
| | - Andreas Hagendorff
- Klinik und Poliklinik für Kardiologie, Universitätsklinikum Leipzig, Leipzig, Deutschland
| | - Christian Jung
- Klinik für Kardiologie, Pneumologie und Angiologie, Universitätsklinikum Düsseldorf, Düsseldorf, Deutschland
| | - Beatrice Hoffmann
- Department of Emergency Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Natalie Jaspers
- Klinik für Gastroenterologie und Hepatologie, Universitätsklinikum Köln, Köln, Deutschland
| | - Horst Kinkel
- Praxis für Gastroenterologie, Düren, Deutschland
| | - Clemens-Alexander Greim
- Klinik für Anästhesiologie, Intensiv- und Notfallmedizin, Klinikum Fulda, Pacelliallee 4, 36043, Fulda, Deutschland
| | - Fabian Knebel
- Klinik für Innere Medizin, Sana Klinikum Lichtenberg, Berlin, Deutschland
| | - Johann Bauersachs
- Klinik für Kardiologie und Angiologie, Medizinische Hochschule Hannover, Hannover, Deutschland
| | - Hans-Jörg Busch
- Universitätsklinikum, Universitäts-Notfallzentrum, Albert-Ludwigs-Universität Freiburg, Freiburg, Deutschland
| | - Daniel Kiefl
- Klinik für Interdisziplinäre Notfallmedizin, Sana Klinikum Offenbach, Offenbach am Main, Deutschland
| | - Alexander O Spiel
- Klinik Ottakring, Zentrale Notaufnahme, Wiener Gesundheitsverbund, Wien, Österreich
| | - Gernot Marx
- Klinik für operative Intensivmedizin, Universitätsklinikum Aachen, Aachen, Deutschland
| | - Christoph F Dietrich
- Department für Allgemeine Innere Medizin Kliniken Hirslanden Beau Site, Salem und Permanence, Bern, Schweiz. .,Department Allgemeine Innere Medizin DAIM, Schänzlihalde 11, 3013, Bern, Schweiz.
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Chaubal N, Thomsen T, Kabaalioglu A, Srivastava D, Rösch SS, Dietrich CF. Ultrasound and contrast-enhanced ultrasound (CEUS) in infective liver lesions. ZEITSCHRIFT FUR GASTROENTEROLOGIE 2021; 59:1309-1321. [PMID: 34768289 DOI: 10.1055/a-1645-3138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Infektiöse fokale Leberläsionen (FLL) treten in der klinischen Praxis häufig auf, wobei bakterielle Leberabszesse die Hälfte ausmachen. Eine genaue Diagnose der FLL ist für die Auswahl der am besten geeigneten Therapie und zur Vorbeugung von Komplikationen unerlässlich. Ziel der aktuellen Arbeit ist es, den Nutzen von Ultraschall und kontrastmittelverstärktem Ultraschall (CEUS) zur Erkennung und Charakterisierung infektiöser Leberläsionen zu beschreiben.
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Affiliation(s)
- Nitin Chaubal
- Thane Ultrasound Centre, Thane, India.,Jaslok Hospital and Research Centre, Mumbai, India
| | | | | | - David Srivastava
- Allgemeine Innere Medizin (DAIM) Kliniken Beau Site, Salem und Permanence, Bern, Switzerland
| | - Stephanie Simone Rösch
- Allgemeine Innere Medizin (DAIM) Kliniken Beau Site, Salem und Permanence, Bern, Switzerland
| | - Christoph F Dietrich
- Allgemeine Innere Medizin (DAIM) Kliniken Beau Site, Salem und Permanence, Bern, Switzerland
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Leotta DF, Bruce M, Wang YN, Kucewicz J, Khokhlova T, Chan K, Monsky W, Matula TJ. Sonographic Features of Abscess Maturation in a Porcine Model. ULTRASOUND IN MEDICINE & BIOLOGY 2021; 47:1920-1930. [PMID: 33902954 PMCID: PMC8169585 DOI: 10.1016/j.ultrasmedbio.2021.03.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 03/12/2021] [Accepted: 03/15/2021] [Indexed: 06/12/2023]
Abstract
Abscesses are walled-off collections of infected fluids that often develop as complications in the setting of surgery and trauma. Treatment is usually limited to percutaneous catheterization with a course of antibiotics. As an alternative to current treatment strategies, a histotripsy approach was developed and tested in a novel porcine animal model. The goal of this article is to use advanced ultrasound imaging modes to extract sonographic features associated with the progression of abscess development in a porcine model. Intramuscular or subcutaneous injections of a bi-microbial bacteria mixture plus dextran particles as an irritant led to identifiable abscesses over a 2 to 3 wk period. Selected abscesses were imaged at least weekly with B-mode, 3-D B-mode, shear-wave elastography and plane-wave Doppler imaging. Mature abscesses were characterized by a well-defined core of varying echogenicity surrounded by a hypoechoic capsule that was highly vascularized on Doppler imaging. 3-D imaging demonstrated the natural history of abscess morphology, with the abscess becoming less complex in shape and increasing in volume. Furthermore, shear-wave elastography demonstrated variations in stiffness as phlegmon becomes abscess and then liquefies, over time. These ultrasound features potentially provide biomarkers to aid in selection of treatment strategies for abscesses.
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Affiliation(s)
- Daniel F Leotta
- Applied Physics Laboratory, University of Washington, Seattle, Washington, USA.
| | - Matthew Bruce
- Applied Physics Laboratory, University of Washington, Seattle, Washington, USA
| | - Yak-Nam Wang
- Applied Physics Laboratory, University of Washington, Seattle, Washington, USA
| | - John Kucewicz
- Applied Physics Laboratory, University of Washington, Seattle, Washington, USA
| | - Tatiana Khokhlova
- Department of Gastroenterology, University of Washington, Seattle, Washington, USA
| | - Keith Chan
- Department of Radiology, University of Washington, Seattle, Washington, USA
| | - Wayne Monsky
- Department of Radiology, University of Washington, Seattle, Washington, USA
| | - Thomas J Matula
- Applied Physics Laboratory, University of Washington, Seattle, Washington, USA
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Sumer J, Haller S, Sawatzki M, Kellner J, Boggian K. An unusual case of multiple hepatic and pulmonary abscesses caused by Aggregatibacter aphrophilus in a young man: a case report. J Med Case Rep 2021; 15:34. [PMID: 33536074 PMCID: PMC7860222 DOI: 10.1186/s13256-020-02650-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Accepted: 12/25/2020] [Indexed: 11/23/2022] Open
Abstract
Background Aggregatibacter aphrophilus, formerly known as Haemophilus aphrophilus, belongs to the HACEK organisms, a group of pathogens classically associated with infectious endocarditis. A. aphrophilus is a rarely found pathogen, though abscess formation in various organs has been described, typically due to spread from an infected heart valve. Here we describe the unusual case of multiple hepatic abscesses caused by A. aphrophilus. Case presentation A 33-year-old Caucasian man presented at our hospital with fever and malaise, elevated inflammatory markers, and liver enzymes. Imaging was compatible with multiple liver and pulmonary abscesses, without evidence of endocarditis. Cultures of blood and liver abscess material remained without growth. Polymerase chain reaction finally revealed Aggregatibacter aphrophilus in the liver tissue. The patient recovered fully within 6 weeks of doxycycline treatment. Conclusions There are only a few case descriptions of liver abscesses caused by A. aphrophilus. As a ubiquitous organism in the gastrointestinal tract, A. aphrophilus may reach the liver via the portal venous system, as well as through hematogenous spread from the oropharynx. HACEK organisms are notoriously difficult to grow on culture, which highlights the diagnostic importance of eubacterial PCR.
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Affiliation(s)
- Johannes Sumer
- Division of Infectious Diseases and Hospital Epidemiology, Cantonal Hospital St. Gallen, Rorschacher Strasse 95, 9007, St. Gallen, Switzerland.
| | - Sabine Haller
- Division of Infectious Diseases and Hospital Epidemiology, Cantonal Hospital St. Gallen, Rorschacher Strasse 95, 9007, St. Gallen, Switzerland
| | - Mikael Sawatzki
- Division of Gastroenterology, Cantonal Hospital St. Gallen, Rorschacher Strasse 95, 9007, St. Gallen, Switzerland
| | - Jan Kellner
- Division of Radiology, Cantonal Hospital St. Gallen, Rorschacher Strasse 95, 9007, St. Gallen, Switzerland
| | - Katia Boggian
- Division of Infectious Diseases and Hospital Epidemiology, Cantonal Hospital St. Gallen, Rorschacher Strasse 95, 9007, St. Gallen, Switzerland
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Typical imaging finding of hepatic infections: a pictorial essay. Abdom Radiol (NY) 2021; 46:544-561. [PMID: 32715334 PMCID: PMC7897188 DOI: 10.1007/s00261-020-02642-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 06/25/2020] [Accepted: 07/04/2020] [Indexed: 02/08/2023]
Abstract
Hepatic infections are frequent in clinical practice. Although epidemiological, clinical and laboratory data may suggest hepatic infection in certain cases, imaging is nearly always necessary to confirm the diagnosis, assess disease extension and its complications, evaluate the response to treatment, and sometimes to make differential diagnoses such as malignancies. Ultrasound (US) is usually the first-line investigation, while computed tomography (CT) and magnetic resonance imaging (MRI) provide better characterization and a more precise assessment of local extension, especially biliary and vascular. The purpose of this article is to describe the typical features and main complications of common hepatic infections. Familiarity with the radiological features of this entity can help suggest the correct diagnosis and the need for further studies as well as determine appropriate and timely treatment.
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Beckmann S, Simanowski JH. Update in Contrast-Enhanced Ultrasound. Visc Med 2020; 36:476-486. [PMID: 33447604 PMCID: PMC7768106 DOI: 10.1159/000511352] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Accepted: 09/03/2020] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND The aim of modern medicine is to safely classify diseases for successful therapy without invasive measures. Sonography, computed tomography (CT), and magnetic resonance imaging (MRI) are potent imaging techniques. However, without contrast medium, the informative value of the 3 native methods is limited. The advantages of sonography are: no radiation exposure or previously known physically harmful interactions with tissue, proportionate disappearance of a contrast agent risk, no (probably irreversible) contrast agent deposits, and no risk of renal insufficiency. But, is that enough to compete with of even exceed CT and MRI? SUMMARY In this review, the state of the art of contrast-enhanced ultrasound (CEUS) in the abdominal cavity is presented. The remarkable diagnostic possibilities can unfortunately only be demonstrated here in a small number of impressive, typical case studies underpinned by the literature, so that, from one's own perspective, the full spectrum of CEUS can be used by oneself or initiated. Within the limits of physics, the real-time dynamics of CEUS enable conclusions to be drawn, so that with the current technology, sonography, including expansion by contrast, can be considered superior to other imaging methods. It is not uncommon for CEUS to have the value of a control and reference method. KEY MESSAGES Sonography very often enables reliable diagnostics. The introduction of a contrast agent in sonography has led to a quantum leap similar to that of other imaging techniques. Already natively, the real-time representation of dynamic events leads to a certain superiority, i.e., complete observation of the inflow and outflow phases of the contrast medium and the resulting diagnostic; tissue-specific differentiation options provide a unique selling point. Further advantages of the first-choice imaging diagnostic method are: a lack of radiation exposure, repeatability of the examination at any time, local independence, a negligible allergy rate compared to the contrast agents of other methods, and a lack of kidney and thyroid exposure or excluded deposits.
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Affiliation(s)
| | - Jörg H. Simanowski
- Clinic for General, Visceral, Vascular and Obesity Surgery and Interdisciplinary Emergency Center of the Nordstadt Clinic of the Hannover Region Clinic, Hannover, Germany
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Yang Z, Lv K, Zhao Y, Pan M, Zhang C, Wei S. Sarcomatoid hepatocellular carcinoma mimicking hepatic abscess: A case report. Medicine (Baltimore) 2020; 99:e22489. [PMID: 32991488 PMCID: PMC7523807 DOI: 10.1097/md.0000000000022489] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
RATIONALE Primary sarcomatoid hepatocellular carcinoma (SHC) is a rare subtype of morphologic hepatocellular carcinoma reported on less than 1% of surgical pathology specimens. Herein, we report a rare case of SHC. The case in question was initially misdiagnosed as a liver abscess due to the clinical and radiological similarity between these 2 pathologies. Ultrasound(US)- and contrast-enhanced ultrasound (CEUS)- guided biopsies are helpful in making an accurate diagnosis under the appropriate biopsy area and angle of puncture. PATIENT CONCERNS A 56-year old male presented to our hospital with a 2-month history of dull, upper abdominal pain without radiation. DIAGNOSES Upon initial investigation with computed tomography, a cystic mass was found in the hepatic V segment and an infectious etiology was presumed. Further diagnostic examination with CEUS and magnetic resonance imaging suggested a hepatic abscess. However, a diagnosis of atypical intrahepatic cholangiocarcinoma was not excluded. The patient received the standard antibiotic treatment without alleviation of his symptoms. Through 3 diagnostic US-and CEUS-guided biopsies over a 3-month period, the pathological diagnosis of SHC was finally confirmed. INTERVENTIONS The patient was diagnosed by 3 diagnostic US-and CEUS-guided biopsies, the pathological diagnosis of SHC was finally confirmed. OUTCOMES Due to the delay in diagnosis, the patient was not a candidate for surgical resection, and showed dissemination of the lesion to the portal vein. Therefore, treatment with chemotherapy was initiated. After 4 courses of this regimen, tumor progression was found on enhanced magnetic resonance imaging. Therefore, the patient received immunotherapy and targeted therapy with limited response. The patient passed away 3 months later due to tumor progression. LESSONS A hepatic abscess should be considered as a malignant lesion when clinical symptoms do not resolve upon standard treatment. US- and CEUS- guided biopsies are helpful in making an accurate diagnosis under the appropriate biopsy area and angle of puncture.
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Affiliation(s)
| | | | | | | | | | - Shumei Wei
- Department of Pathology, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
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Shen H, Lv G, Lin H, Huang N, Wu Y, Cheng H, Yang S. Development of an Ultrasound Prediction Model to Discriminate between Malignant and Benign Liver Lesions. ULTRASOUND IN MEDICINE & BIOLOGY 2020; 46:952-958. [PMID: 31954552 DOI: 10.1016/j.ultrasmedbio.2019.12.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 12/16/2019] [Accepted: 12/17/2019] [Indexed: 06/10/2023]
Abstract
To discriminate between malignant and benign liver lesions, we evaluated the ultrasound features of the target lesions in 266 patients and established a prediction model using a logistic regression algorithm. The prediction model based on independent factors was expressed as predictive score = 1.129 × interaction of irregular shape and unclear boundary + 1.398 × occupying effect + 2.363 × hypo-echoic halo + 1.987 × marginal vascular sign + 3.627 × cirrhosis background + 2.976 × nodule in nodule sign + 3.690 × metastasis sign. Receiver operating characteristic curve analysis revealed that the optimal cutoff predictive score was 2.8 (area under the curve = 0.942). The specificity of the prediction model was not significantly different from that of computed tomography/magnetic resonance imaging (91.7% vs. 98.8%, p = 0.077), whereas the prediction model had a lower sensitivity (90.1% vs. 97.8%, p < 0.001) and accuracy (90.6% vs. 98.1%, p < 0.001) than computed tomography/magnetic resonance imaging. We conclude that the ultrasound prediction model exhibited good diagnostic performance in discriminating malignant from benign liver lesions.
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Affiliation(s)
- Haolin Shen
- Department of Ultrasound, Zhangzhou Hospital Affiliated to Fujian Medical University, Zhangzhou, Fujian, China
| | - Guorong Lv
- Department of Clinical Medicine, Quanzhou Medical College, Quanzhou, Fujian, China
| | - Hanzong Lin
- Department of Ultrasound, Zhangzhou Hospital Affiliated to Fujian Medical University, Zhangzhou, Fujian, China
| | - Ningjie Huang
- Department of Ultrasound, Zhangzhou Hospital Affiliated to Fujian Medical University, Zhangzhou, Fujian, China
| | - Yifang Wu
- Department of Ultrasound, Zhangzhou Hospital Affiliated to Fujian Medical University, Zhangzhou, Fujian, China
| | - Hong Cheng
- Department of Ultrasound, Zhangzhou Hospital Affiliated to Fujian Medical University, Zhangzhou, Fujian, China
| | - Shuping Yang
- Department of Ultrasound, Zhangzhou Hospital Affiliated to Fujian Medical University, Zhangzhou, Fujian, China.
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Alabousi A, Patlas MN, Khalili K, Haider EA. Parasitic Liver Infections: Imaging Findings and Strategies for Timely Diagnosis. Curr Probl Diagn Radiol 2019; 49:447-451. [PMID: 31466878 DOI: 10.1067/j.cpradiol.2019.08.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Revised: 07/25/2019] [Accepted: 08/01/2019] [Indexed: 11/22/2022]
Abstract
There are a number of parasitic infections that can affect the liver and biliary tree. These infections can be primarily related to the liver or can include secondary hepatic involvement. Imaging can narrow down the differential diagnosis in the appropriate clinical setting, and can even clinch the diagnosis with some pathognomonic findings. The various imaging modalities can also identify disease extent, help guide management, and demonstrate response to treatment. This pictorial essay will give an overview of parasitic liver infections, and will discuss the best imaging strategies and the key imaging features to help make a timely accurate diagnosis.
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Affiliation(s)
- Abdullah Alabousi
- Department of Radiology, McMaster University, St Joseph's Healthcare, Hamilton, ON, Canada.
| | - Michael N Patlas
- Department of Radiology, McMaster University, Hamilton General Hospital, Hamilton, ON, Canada
| | - Korosh Khalili
- Department of Medical Imaging, University of Toronto, Toronto General Hospital, Toronto, ON, Canada
| | - Ehsan A Haider
- Department of Radiology, McMaster University, St. Joseph's Healthcare, Hamilton, ON, Canada
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Linta N, Baron Toaldo M, Bettini G, Cordella A, Quinci M, Pey P, Galli V, Cipone M, Diana A. The feasibility of contrast enhanced ultrasonography (CEUS) in the diagnosis of non-cardiac thoracic disorders of dogs and cats. BMC Vet Res 2017; 13:141. [PMID: 28545570 PMCID: PMC5445396 DOI: 10.1186/s12917-017-1061-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 05/17/2017] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND This study describes the feasibility of Contrast Enhanced Ultrasonography (CEUS) in the diagnostic work-up of non-cardiac thoracic disorders of small animals. The second aim is to assess the usefulness of CEUS as a direct guide for sample procedures. RESULTS Forty animals, 28 dogs and 12 cats, were included in the study. Thoracic disorders included 23 pulmonary lesions [primary carcinoma (14), lymphoma (1), sarcoma (1), histiocytic sarcoma (1), abscess (1) and pneumonia (5)] and 17 mediastinal lesions [lymphoma (8), thymoma (3), mesothelioma (1), melanoma (1), carcinomatous lymphadenopathy (1), mixsosarcoma (1), lipoma (1), and abscess (1)]. The majority of neoplastic pulmonary lesions showed an inhomogeneous distribution of contrast medium, whereas inflammatory lesions had a homogenous distribution with typical pulmonary vessels ramification. The majority of mediastinal malignant lesions showed an inhomogeneous distribution pattern. The lung and mediastinal abscesses had peripheral enhancement of the wall with an avascular center. All cytological and biopsy samples obtained after CEUS were diagnostic. Quantitative analysis, performed in 19/23 pulmonary lesions, showed a statistically significant difference (P < 0.0001) between the arrival time of the malignant (7.27 s - range 4.46-13.52 s) and benign (4.52 s - range 2.87-6.06 s) pulmonary lesions. CONCLUSIONS CEUS may be a useful tool for the evaluation of non-cardiac thoracic lesions. The contrast medium allows for the precise definition of lesion edges, the presence of necrotic areas, and the distribution of pulmonary vessels. Based on our preliminary results, the use of ultrasonographic contrast medium can be recommended for improving the diagnostic usefulness of cytology and biopsy sampling, because CEUS may help to define necrotic areas from viable tissue.
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Affiliation(s)
- N. Linta
- Department of Veterinary Medical Sciences, Alma Mater Studiorum – University of Bologna, Via Tolara di Sopra 50, I-40064 Ozzano Emilia, Bologna Italy
| | - M. Baron Toaldo
- Department of Veterinary Medical Sciences, Alma Mater Studiorum – University of Bologna, Via Tolara di Sopra 50, I-40064 Ozzano Emilia, Bologna Italy
| | - G. Bettini
- Department of Veterinary Medical Sciences, Alma Mater Studiorum – University of Bologna, Via Tolara di Sopra 50, I-40064 Ozzano Emilia, Bologna Italy
| | - A. Cordella
- Department of Veterinary Medical Sciences, Alma Mater Studiorum – University of Bologna, Via Tolara di Sopra 50, I-40064 Ozzano Emilia, Bologna Italy
| | - M. Quinci
- Department of Veterinary Medical Sciences, Alma Mater Studiorum – University of Bologna, Via Tolara di Sopra 50, I-40064 Ozzano Emilia, Bologna Italy
| | - P. Pey
- ANTECH Imaging Services, 17672-B Cowan Avenue, Irvine, CA 92614 USA
| | - V. Galli
- Freelance sonographer, Rome, Italy
| | - M. Cipone
- Department of Veterinary Medical Sciences, Alma Mater Studiorum – University of Bologna, Via Tolara di Sopra 50, I-40064 Ozzano Emilia, Bologna Italy
| | - A. Diana
- Department of Veterinary Medical Sciences, Alma Mater Studiorum – University of Bologna, Via Tolara di Sopra 50, I-40064 Ozzano Emilia, Bologna Italy
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