Fig. 3

Histological features of the mass observed from a permanent section. a At scan view, the tumor shows well-margination and needle tract-like structure (arrow) (H&E stain; original magnification, scan view). b The tumor showing thin but obvious fibrous capsule (H&E stain; original magnification, × 40). c The tumor cells showed trabecular growth patterns with intersecting homogenous eosinophilic materials (H&E stain; original magnification, × 100). d Infarction-like necrotic area and hemorrhage is present in some areas of the tumor (H&E stain; original magnification, × 100). f The tumor cells showed amphophilic granular cytoplasm with round to oval nuclei and nucleoli in some cells (H&E stain; original magnification, × 400)