Figure 2

Clinical photographs and photomicrographs. A) A large, cerebroid and hypervascularized mass occupied the upper abdomen. The tumor arises from the distal part of stomach. B). The ressected mass: a well-circumscribed tumor measuring 30 × 25 × 21 cm and weighting 3.750 g. Cut sections demonstrated a pink, gray and fish-flesh appearance solid parenchyma with focal areas of necrosis, and several blood-filled cysts. C). Microscopically, the tumor was characterized by spindle-shaped tumor cells with acidophilic cytoplasm surrounded by a well-defined cell membrane (Hematoxylin & Eosin ×200). D). Immunohistochemical staining of the tumor tissue demonstrates positive reactivity to c-kit.