Diagnostic features of real-time contrast-enhanced ultrasound in focal nodular hyperplasia of the liver

Ultraschall in der Medizin : Organ der Deutschen Gesellschaft für Ultraschall in der Medizin, [der] Österreichischen Gesellschaft für Ultraschall in der Medizin, [der] Schweizerischen Gesellschaft für Ultraschall in Medizin und Biologie
Fabio PiscagliaLuigi Bolondi

Abstract

The typical appearance of focal nodular hyperplasia (FNH) in radiological contrast techniques (helical CT or MRI) includes homogeneous enhancement in the arterial phase, but the exact timing for the best visualization of this pattern is unknown. The aim of the present study was to assess the ultrasound pattern of FNH with special attention to real-time contrast-enhanced ultrasonography (CEUS) appearance and specifically to the timing of perfusion patterns. 72 patients (60 females, 12 males) with a total of 90 FNH nodules with a diameter ranging from 8 to 100 mm (mean +/- SD, 40.6 +/- 21.5 mm) were examined continuously for at least 4 minutes using CnTI and CPS methods (ESAOTE, Genoa, Italy and Acuson-Siemens) after bolus injection of SonoVue (BRACCO, Milan, Italy). 87 of 90 nodules showed the typical coin-like hyperechogenicity in the arterial phase. The remaining three nodules were all in the same patient and were diagnosed as FNH after resection. Contrast started to appear within the lesions after a mean of 15.7 +/- 4.6 seconds (range 7 - 27 s) and reached peak signal intensity, with the greatest differentiation between the lesion and the surrounding parenchyma, at around 22.6 +/- 7.0 seconds (range 14 - 72 s). In the late ph...Continue Reading

Citations

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