Figures
![Figure 1.](/tables/jcgo477w-g001.jpg)
Figure 1. Pelvic computed tomography image: a large mass (arrow) occupying the pelvis, with an irregular shape and contrast enhancement is shown.
![Figure 2.](/tables/jcgo477w-g002.jpg)
Figure 2. Macro findings of left ovarian tumor: an elastic hard yellow tumor with an uneven surface, 17 cm in diameter is shown.
![Figure 3.](/tables/jcgo477w-g003.jpg)
Figure 3. Microscopic findings of ovarian tumor (H&E, × 200): spindle-shaped tumor cells arranged in complicated fascicles, with relatively uniform oval and spindle-shaped nuclei are shown.
![Figure 4.](/tables/jcgo477w-g004.jpg)
Figure 4. Microscopic findings of ovarian tumor showing abnormal nuclear mitosis (H&E, × 400): Scattered mitosis was seen within the tumor (arrow). The number of mitoses was counted as more than 20 per 10 high-power fields.
![Figure 5.](/tables/jcgo477w-g005.jpg)
Figure 5. Microscopic findings of ovarian tumor (H&E, × 200): well-defined coagulated and necrotic tissues (arrow) with various sizes are noted in the tumor.
![Figure 6.](/tables/jcgo477w-g006.jpg)
Figure 6. Immunohistochemical staining for h-caldesmon: the tumor cytoplasm was strongly positive for h-caldesmon.