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Iavarone, Massimo; Viganò, Mauro; Piazza, Nicole; Occhipinti, Vincenzo; Sangiovanni, Angelo; Maggioni, Marco; D’Ambrosio, Gioacchino; Forzenigo, Laura V; Motta, Fabio; Lampertico, Pietro; Rumi, Maria-Grazia; Colombo, Massimo
Annals of hepatology, 03/2019, Volume: 18, Issue: 2Journal Article
AbstractIntroduction and aimThe American Association for the Study of the Liver (AASLD) recommends contrast computerized tomography (CT-scan) and magnetic resonance (MRI) to diagnose hepatocellular carcinoma (HCC) arising in cirrhotic patients under semiannual surveillance with abdominal ultrasound (US). A US guided fine needle biopsy (FNB) serves the same purpose in radiologically undiagnosed tumors and incidentally detected nodules in cirrhotics outside surveillance. In this population, we evaluated the performance of radiological diagnosis of HCC according to 2010 AASLD recommendations. Materials and methodsAll cirrhotic patients with a liver nodule incidentally detected by US were prospectively investigated with a sequential application of CT-scan/MRI examination and a FNB. ResultsBetween 2011 and 2015, 94 patients (mean age 67 years) had a liver nodule (total 120) detected by US in the context of histologically confirmed cirrhosis. Mean nodules diameter was 40 (10–160) mm, 87 (73%) <5 cm. At histology, 84 (70%) nodules were HCC, 8 (7%) intrahepatic cholangiocarcinoma, 6 (5%) metastases, 2 (2%) neuroendocrine tumors and 20 (16%) benign lesions. Hyperenhancement in arterial phase followed by wash-out in venous phases on at least one radiological technique was demonstrated in 62 nodules (61 HCC, 1 high grade dysplastic nodule), with a specificity of 97% (IC95%: 85–100%), sensitivity 73% (IC95%: 62–81%) and diagnostic accuracy 80%, being 64% for ≥5 cm HCC. Sensitivity of AFP >200 ng/mL was 12% (IC95%: 6–23%). ConclusionA single contrast imaging technique showing a typical contrast pattern confidently identifies HCC also in cirrhotic patients with an incidental liver nodule, thereby reducing the need for FNB examinations.
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