Solitary fibrous tumor of the liver: A case report and review of the literature

Figure 1 Contrast-enhanced liver magnetic resonance. A: T1-weighted image showing a slight hypointense mass; B: Mass showing iso- to hyperintensity on T2-weighted image, and the size was 2.7 cm × 2.3 cm; C: Well enhanced mass in the arterial phase; D: lower intensity of the mass compared with the surrounding parenchyma during the portal venous phase; E: Diffusion-weighted imaging showing higher intensity of the mass compared to the normal liver tissue.

Figure 2 Images of the resected specimen. Gross specimen showing white-grayish cut surface with areas of necrosis and hemorrhage.

Figure 3 Postoperative pathology findings of solitary fibrous tumor. A: Proliferation of spindle cells randomly arranged in the abundant stromal collagen (hematoxylin and eosin staining, 200 × magnification); B: Immunohistochemical staining revealing the positive CD34 staining in the tumor cells (200 × magnification); C: Immunohistochemical staining showing a strong STAT6 expression in the nucleus (200 × magnification); D: Ki67 Labeling index of 10%-15% (200 × magnification).

Figure 4 Timeline of the patient’s medical history.