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Hepatic inflammatory pseudotumor: educational value of an incorrect diagnosis at contrast-enhanced ultrasound

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Abstract

Hepatic inflammatory pseudotumor (IPT) is a rare lesion that is frequently confused with malignant tumors. According to the latest guidelines on contrast-enhanced ultrasound, hypoenhancement of solid lesions in the portal and late phases corresponds to the wash-out phenomenon that characterizes malignancies. IPT may show rapid arterial enhancement and portal or late phase hypoenhancement, falsely suggesting malignancy. We report a case of a diagnostic error in which a multifocal IPT was misdiagnosed as hepatic metastases. The IPT developed after an endoscopic retrograde cholangiography was investigated by close follow-up with CEUS and contrast-enhanced CT.

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Conflict of interest

Antonio Corvino, Benedetta Guarino, Orlando Catalano, Fabio Corvino, Alfonso Amore, and Antonella Petrillo declare that they have no conflict of interest.

Human rights statements and informed consent

All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1975, as revised in 2008.

Informed consent was obtained from the patient for being included in the study.

Written informed consent was obtained from the patient according to the Ethical Committee of our Institution.

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Authors and Affiliations

  1. Department of Advanced Medical Biosciences, Biostructures and Bioimmages Institution (IBB), National Research Council (CNR), University Federico II of Napoli (UNINA), via S. Pansini, 80131, Naples, Italy

    Benedetta Guarino, Antonio Corvino & Fabio Corvino

  2. Department of Radiology, National Cancer Institute, Pascale Foundation, via M. Semmola, 80131, Naples, Italy

    Orlando Catalano, Antonio Corvino & Antonella Petrillo

  3. Department of Hepatic Surgery, National Cancer Institute, Pascale Foundation, via M. Semmola, 80131, Naples, Italy

    Alfonso Amore

  4. Via B. Croce n. 82, 81033, Casal di Principe, CE, Italy

    Antonio Corvino

Authors
  1. Benedetta Guarino
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  2. Orlando Catalano
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  3. Antonio Corvino
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  4. Fabio Corvino
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  5. Alfonso Amore
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  6. Antonella Petrillo
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Corresponding author

Correspondence to Antonio Corvino.

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Guarino, B., Catalano, O., Corvino, A. et al. Hepatic inflammatory pseudotumor: educational value of an incorrect diagnosis at contrast-enhanced ultrasound. J Med Ultrasonics 42, 547–552 (2015). https://doi.org/10.1007/s10396-015-0624-6

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  • DOI: https://doi.org/10.1007/s10396-015-0624-6

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