PMC5224772_01
Ultrasonographic images of the liver on admission. (A) An irregularly shaped, 1-cm-diameter, low-echoic focal lesion was observed in S5 adjacent to the gallbladder (white arrow). At least two other lesions showing similar characteristics and size were detected in S5; these lesions were not detected on contrast-enhanced abdominal computed tomography. (B) A larger (2-cm-diameter) low-echoic lesion was also observed in S6 (white arrow). This was the only lesion detected on contrast-enhanced computed tomography of the abdomen.
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Most of the lesions in S5 were approximately 10 mm in diameter (Fig. 1A); however, the largest lesion (22 mm in diameter) was observed in S6 (Fig. 1B).
Contrast-enhanced computed tomography images of the abdomen on admission. (A) Intravascular thrombosis was observed in the right portal branch (white arrow). (B) Multiple diverticulae were also observed in the sigmoid colon (white arrows). (C) An approximately 2-cm-diameter lesion was observed in S7; this was slightly enhanced in the equilibrium phase.
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Notably, contrast-enhanced dynamic computed tomography (CT) of the abdomen (Abd-CT) showed intravascular thrombosis in the right branch of the portal vein (Fig. 2A), multiple diverticulae, and thickening of the wall of the sigmoid colon (Fig. 2B). In addition, a slightly and homogenously enhanced lesion in the equilibrium phase without rapid fill-in, early washout, or a prolonged enhancement pattern was observed in the liver (S6) (Fig. 2C); however, the smaller lesions in S5 that had been detected on Abd-US could not be seen on the Abd-CT images.