Patterns of appearance and risk of misdiagnosis of intrahepatic cholangiocarcinoma in cirrhosis at contrast enhanced ultrasound

Marzia Galassi, Massimo Iavarone, Sandro Rossi, Simona Bota, Sara Vavassori, Laura Rosa, Simona Leoni, Laura Venerandi, Sara Marinelli, Angelo Sangiovanni, Letizia Veronese, Mirella Fraquelli, Alessandro Granito, Rita Golfieri, Massimo Colombo, Luigi Bolondi, Fabio Piscaglia

Research output: Contribution to journalArticle

Abstract

Aim: Primary aim was to validate the percentage of intrahepatic cholangiocarcinomas (ICC) which have a contrast vascular pattern at contrast enhanced ultrasound (CEUS) at risk of misdiagnosis with hepatocellular carcinoma (HCC) and, secondary aim, to verify if any characteristics in the CEUS pattern helps to identify ICC. Methods: All ICC on cirrhosis seen in three Italian centres (Bologna, Milan and Pavia) between 2003 and 2011, in which CEUS and at least another imaging technique (CT or MRI) had been performed, were retrospectively identified. Those patients with ICC size comparable to the early HCC stage (Milan criteria, considered as small ICC) were enrolled for this study. The enhancement pattern at CEUS was analysed and compared with CT or MRI. Results: A total of 25 small ICC made this study group. CEUS was at risk of misdiagnosis of ICC for HCC in a significantly higher number of cases than in CT (performed in 24 ICC) (52% vs. 4.2%, P = 0.009) and MRI (11 ICC) (52% vs. 9.1%, P = 0.02). A different contrast pattern among all techniques was found in 6 of 10 ICC lesions submitted to the three imaging methods. In the arterial phase, ICC lacked global hyperenhacement in approximately 50% of cases at CEUS and the degree of intensity of wash-out in the late phase was marked in 24% of nodules. Conclusions: CEUS misdiagnosed as HCC a significantly higher number of ICC lesions in cirrhotic patients than CT and MRI. However, some CEUS contrast features can help suspect ICC, especially in some cases with inconclusive CT or MRI.

Original languageEnglish
Pages (from-to)771-779
Number of pages9
JournalLiver International
Volume33
Issue number5
DOIs
Publication statusPublished - May 2013

Keywords

  • CEUS
  • Hepatocellular carcinoma
  • Intrahepatic cholangiocarcinoma

ASJC Scopus subject areas

  • Hepatology

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    Galassi, M., Iavarone, M., Rossi, S., Bota, S., Vavassori, S., Rosa, L., Leoni, S., Venerandi, L., Marinelli, S., Sangiovanni, A., Veronese, L., Fraquelli, M., Granito, A., Golfieri, R., Colombo, M., Bolondi, L., & Piscaglia, F. (2013). Patterns of appearance and risk of misdiagnosis of intrahepatic cholangiocarcinoma in cirrhosis at contrast enhanced ultrasound. Liver International, 33(5), 771-779. https://doi.org/10.1111/liv.12124