PMC5664247_01
Axial unenhanced CT-scan performed a few years before the superinfection shows the hepatic hydatid cyst (asterisk) with calcified wall in segment VI.
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fig1
Axial MR TSE T2-weighted scans (a-c) show the hydatid cyst (asterisk), with a soft hyperintensity of the surrounding hepatic parenchyma due to inflammation, the fistulous tract (arrowheads), and the abdominal-subcutaneous abscess (arrows) involving the right iliac muscle. Axial diffusion weighted image (b-value 800 s/mm2) (d) demonstrates the high hyperintensity of both the abscess (arrows) and the fistula (arrowheads).
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fig2
The abscess showed a middle-low T2 hyperintensity of the content while DWI study revealed diffusion restriction of the lesion (Figure 2).
Axial oblique (a) and coronal (b) MIP reformatted CT-fistulography. The injection of the contrast agent through the external opening of the fistula allowed identifying the abscess (arrows) and the whole fistulous tract (arrowheads) ascending to the hepatic hydatid cyst (black asterisk).
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fig3
The exam showed a progressive contrast filling of the abscess and the abdominal fistula (Figure 3), ascending till the calcified hydatid cyst of the liver.