Abstract
Purpose
To perform an international survey on current practices in imaging-based surveillance, diagnosis, staging, and assessment of treatment response for HCC.
Materials and methods
Three themes were covered in this international survey: demographics of respondents and liver imaging expertise; imaging practices for screening, surveillance, diagnosis, staging, and assessment of treatment response for HCC; and diagnostic imaging systems used. Descriptive summaries were created.
Results
Of 151 respondents, 22.5% were from Asia, 6.0% from Europe, 19.9% from North America, 26.5% from South America, and 25.2% from Australasia; 57.0% respondents worked in academic and 34.4% in private or mixed settings. Non-contrast ultrasound was most commonly used for screening and surveillance of HCC (90.7%), and multiphase computed tomography was used for diagnosis (96.0%). Extracellular contrast agents (69.5%) were the most commonly used MRI contrast agents and Lumason/SonoVue (31.1%) is the most commonly used contrast-enhanced ultrasound contrast agent. A majority (94.0%) of respondents use ancillary imaging features for assessment of liver lesions in at-risk patients. Usage of diagnostic imaging systems for HCC varied by region. RECIST or mRECIST criteria were most commonly used for assessing HCC treatment response (48.3%). Most respondents agreed that a standardized classification for the diagnosis of HCC is needed (68.9%) and that an atlas and lexicon would help improve inter-reader agreement (71.5%).
Conclusion
Practices and recommendations for imaging of HCC vary between geographical regions. Future efforts to develop a unified system should address regional differences and potential barriers for adoption of a standardized diagnostic system for HCC.
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Data availability
The data displayed in this manuscript are available by request to the corresponding author.
Abbreviations
- AASLD:
-
American Association for the Study of Liver Diseases
- BCLC:
-
Barcelona Clinic Liver Cancer
- CEUS:
-
Contrast-enhanced ultrasound
- EASL:
-
European Association for the Study of the Liver
- EORTC:
-
European Organization for Research and Treatment of Cancer
- HCC:
-
Hepatocellular carcinoma
- LI-RADS:
-
Liver Imaging Reporting And Data System
- mRECIST:
-
Modified Response Evaluation Criteria in Solid Tumors
- MRI:
-
Magnetic Resonance Imaging
- OPTN:
-
Organ Procurement and Transplantation Network
- RECIST:
-
Response Evaluation Criteria in Solid Tumors
- SAR:
-
Society of Abdominal Radiology
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Acknowledgements
The authors acknowledge Lauren Hicks from the American College of Radiology for her assistance in the distribution of the survey.
Funding
An Tang was supported by a Chercheur-Boursier Junior 2 from the Fonds de Recherche du Québec en Santé and Fondation de l'association des radiologistes du Québec (FRQS-ARQ #34939).
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The following co-authors are members of the LI-RADS Steering Commitee: An Tang, Guilherme Moura Cunha, and Claude B. Sirlin. All other co-authors are members of the LI-RADS International Working Group.
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The institutional review board at the University of Montreal and CRCHUM granted an exemption for this electronic survey.
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Tang, A., Abukasm, K., Moura Cunha, G. et al. Imaging of hepatocellular carcinoma: a pilot international survey. Abdom Radiol 46, 205–215 (2021). https://doi.org/10.1007/s00261-020-02598-0
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DOI: https://doi.org/10.1007/s00261-020-02598-0