Fig. 6.

a Sonographic image of the liver in a 42-year-old man showing a necrotic mass with central liquefied (asterisk) and peripheral solid material (arrows). Note the indistinct margin of the mass. The lesion was initially diagnosed as a malignant lesion on the basis of the sonographic findings, but CECT findings confirmed the type I pattern of the abscess. b Sagittal CT image shows the ragged appearance of the abscess edge (arrowheads) and the wedge-shaped hypodensity surrounding the abscess (asterisk)