Rare and lacking typical clinical symptoms of liver tumors: Four case reports

Figure 4 Magnetic resonance imaging, specimen and pathological results of single necrotic nodule in the liver. A: On T1-weighted magnetic resonance imaging (MRI), a nodular isointense to slightly hyperintense signal is observed in segment S8 of the liver (arrow); B: During the arterial phase of MRI, the lesion in segment S8 shows a progressive and irregular peripheral enhancement pattern (arrow); C: In the hepatobiliary phase, the lesion in segment S8 exhibits a hypointense signal (arrow); D: On T1-weighted MRI, a nodular isointense to slightly hyperintense signal is observed in segment S6 of the liver (arrow); E: During the arterial phase of MRI contrast enhancement, the lesion in segment S6 demonstrates a ring-like enhancement (arrow); F: In the hepatobiliary phase, the lesion in segment S6 shows a hypointense signal (arrow); G: Specimens of the tumor in segment S6 of the liver and the gallbladder; H: Hematoxylin and eosin (HE) staining 100 ×; I: HE staining 400 ×.