Giant hepatic extra-gastrointestinal stromal tumor treated with cytoreductive surgery and adjuvant systemic therapy: A case report and review of literature

Figure 1 Abdominal computed tomography showing an expansive hepatic mass with a solid component (arrows). A: Intense arterial enhancement; B: Late-phase washout were present.

Figure 2 Magnetic resonance imaging showing a large, central, T1-hyperintense hepatic lesion. A: Blood products (asterisk); B: Arterial enhancement of the solid component (arrow); C: Magnetic resonance cholangiogram showing dilation of the intrahepatic bile ducts.

Figure 3 Histopathological examination. A: bundles of spindle-shaped cells in an irregular pattern, eosinophilic cytoplasm, with normal hepatic parenchyma in peripheral areas in hematoxylin-eosin staining (magnification, × 100); B-D: Immunohistochemical analysis showed that the tumor was positive for Ki-67 (B), CD-117 (C) and DOG1 (D) (magnification, × 100).

Figure 4 Area of tumor resection. Arrows show the residual tumor capsule.

Figure 5 Follow-up abdominal computed tomography scan showing significant reduction of the hepatic mass (arrows), its solid component, and the mass effect on adjacent structures.