CT, MRI and DWI Features of a Solid Organizing Hepatic Abscess

  • Savastano S
  • Pellizzer G
  • Di Grazia L
  • et al.
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Abstract

Solid organizing hepatic abscess is a rare form of focal infection, which needs differentiation from benign and malignant solid masses. We report a case of a 30-year-old man with a solid organizing hepatic abscess, diagnosed by imaging and ex juvantibus criteria. CT and MRI findings are presented and role of DWI is outlined. Noninvasive diagnosis of a solid organizing hepatic abscess is possible in the appropriate clinical setting; percutaneous or surgical biopsy may be indicated in equivocal cases.

Figures

  • Figure 1: Abdominal contrast-enhanced CT. (a) and (b) Scans on arterial and portal phases show a target-like lesion in the segment IV of the liver. The lesion and the normal hepatic parenchyma enhance likewise; a hypoattenuating rim and a tiny hypoattenuating core are also evident. (c) The rim strongly enhances on late venous phase scans.
  • Figure 2:MRI of the liver. (a)Thenodularmass is hypointense on axial GET1-weighted out-of-phaseMRI. (b)The lesion exhibits a target-like appearance on coronal T2-weighted HASTE MRI, the rim being higher in signal intensity than the central component. The tine colliquative core is clearly visible. (c) The central component is hyperintense on DWIb400, while the rim is not appreciable; the colliquative nucleus and the cerebrospinal fluid are hyperintense because of T2-shine-through effect. (d) ADC map shows no water diffusion restriction of the rim and the core. (e) and (f) Contrast-enhanced pattern of the nodule on dynamic MRI (arterial and late venous phases) is similar to the pattern of dynamic CT.

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CITATION STYLE

APA

Savastano, S., Pellizzer, G., Di Grazia, L., Giacomini, D., & Beghetto, M. (2014). CT, MRI and DWI Features of a Solid Organizing Hepatic Abscess. Case Reports in Radiology, 2014, 1–5. https://doi.org/10.1155/2014/930569

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