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Imaging of hepatocellular carcinoma: a pilot international survey

  • Hepatobiliary
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Abdominal Radiology Aims and scope Submit manuscript

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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Correspondence to An Tang.

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Conflicts of interest

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.

Ethics approval

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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