Unusual gastric tumors and tumor-like lesions: Radiological with pathological correlation and literature review

Figure 5 Gastrointestinal stromal tumor. A 58-year-old woman presented with melena and abdominal cramping pain for a year. A: Pre-contrast computed tomography (CT) scan showing amorphous calcifications in a gastric tumor with endoluminal and exophytic growth patterns (arrow); B: Post-contrast-enhanced CT scan showing the intact enhancing mucosa and central necrosis; C: High-power photomicrograph (original magnification, × 100; HE stain) showing spindle cells arranged in lobules; D: The tumor cells were positive for CD117.