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The present study aims to investigate the role of CEUS in evaluating liver lesions with atypical characteristics on contrast-enhanced CT or MRI. All patients enrolled in the study underwent contrast-enhanced ultrasound. Based on CEUS characteristics, atypical nodules will be categorized according to CEUS LI-RADS classification.
This retrospective study investigates the role of CEUS in evaluating liver lesions with atypical characteristics on contrast-enhanced CT or MRI. All patients enrolled in the study underwent contrast-enhanced ultrasound. All CEUS exams were performed, recorded, and analyzed by two experienced operators (>10 years of experience with abdominal US and CEUS). Based on CEUS characteristics, atypical nodules will be categorized according to CEUS LI-RADS (LR) classification. If the analyzed nodule shows a typical hallmark on CEUS (LR-5), that is arterial phase hyperenhancement with late-onset (>60 s) washout of mild intensity, it is definitively considered HCC and have been treated appropriately. Categories LR-3 and LR-4 comprise nodules with different combinations of arterial and venous phase enhancement features, expected to correspond to an intermediate or high probability of lesions to be HCC. Patients with LR-3 or LR-4 nodules underwent follow-up; in some cases they underwent biopsy.
LR-M is used to classify high-probability malignant lesions but nonspecific for HCC; these nodules underwent biopsy for further characterization.
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| CEUS | Diagnostic Test | CEUS for atypical liver nodules |
| Measure | Description | Time Frame |
|---|---|---|
| The role of CEUS in evaluating atypic liver lesions on contrast-enhanced CT or MRI. | The primary endpoint is to assess the contrastographic behaviour of nodules suspected of HCC and defined as atypical by contrast-enhanced CT and MRI, using CEUS. Prevalence of CEUS LI-RADS categories among atypical nodules will be described. | Between January 2018 and January 2023 |
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Inclusion Criteria:
Exclusion Criteria:
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Patients followed for liver cirrhosis or chronic liver disease with increased risk of HCC (HBV-related hepatopathy or fibrosis F3) and diagnosed with liver atypical nodules on contrast-enhanced CT or MRI.
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Fondazione Policlinico A Gemelli Irccs | Roma | RM | 00168 | Italy |
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| ID | Term |
|---|---|
| D006528 | Carcinoma, Hepatocellular |
| ID | Term |
|---|---|
| D000230 | Adenocarcinoma |
| D002277 | Carcinoma |
| D009375 | Neoplasms, Glandular and Epithelial |
| D009370 | Neoplasms by Histologic Type |
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| D009369 | Neoplasms |
| D008113 | Liver Neoplasms |
| D004067 | Digestive System Neoplasms |
| D009371 | Neoplasms by Site |
| D004066 | Digestive System Diseases |
| D008107 | Liver Diseases |