Primary gastrointestinal stromal tumor of the liver: A case report

Figure 1 Real-time CEUS showing a solid, oval-shaped, hyperechogenic 5. 1 cm × 3.8 cm × 4.6 cm mass in the anterior segment of the right liver lobe. A: Hypervascularity in the arterial phase; B: Partial wash-out in the portal venous phase; C: Hypoechoic feature in the late phase.

Figure 2 Transverse sequential triple-phase enhanced spiral CT showing a hypovascular mass in the anterior segment of the right liver lobe. A: The arterial-dominant phase; B: The portal-dominant phase; C: The late phase.

Figure 3 Histologic and immunohistochemical examinations of the tumor biopsy specimen. A: Neoplastic spindle cells in an irregular pattern, with normal hepatic parenchyma in peripheral areas (HE, original magnification, × 200); B: Diffuse and strong positivity for CD117 (original magnification, × 200).