case_images: PMC5828491_01
case_images: Plain radiograph showing osteolytic changes at the medial side of the left iliac bone.
case_images: CRIOR2018-5238512.001.jpg
case_images: PMC5828491_01_CRIOR2018-5238512.001.jpg
case_images: fig1
case_images: Plain radiograph of the pelvic bone showed osteolytic changes of the left iliac bone (Figure 1).
case_images: (a) 7.2 x 9.5 x 3.0 cm mass arising from the left iliac bone and extended into the sacral bone. (b) The large mass showing low intensity on T1-weighted images and high intensity on T2-weighted images and sparsely enhanced by contrast agent.
case_images: CRIOR2018-5238512.002.jpg
case_images: PMC5828491_01_CRIOR2018-5238512.002.jpg
case_images: fig2
case_images: CT and MRI demonstrated that a 7.2 x 9.5 x 3.0 cm tumor arising from the left iliac bone extended into the left side of sacral bone (Figures 2(a) and 2(b)). The large mass showed low intensity on T1-weighted images and high intensity on T2-weighted images and was enhanced by contrast agent (Figure 2(b)).
case_images: A contrast-enhanced CT suggesting the existence of the tumor thrombus of IVC.
case_images: CRIOR2018-5238512.003.jpg
case_images: PMC5828491_01_CRIOR2018-5238512.003.jpg
case_images: fig3
case_images: A contrast-enhanced CT suggested the existence of the tumor thrombus of IVC (Figure 3).
case_images: The tumor cells are small and round shaped and have abundant glycogen.
case_images: CRIOR2018-5238512.004.jpg
case_images: PMC5828491_01_CRIOR2018-5238512.004.jpg
case_images: fig4
case_images: Histopathologically, the tumor cells were small and round shaped and have abundant glycogen (Figure 4).
case_images: (a, b) The tumor volume was reduced successfully and judged as partial response (PR).
case_images: CRIOR2018-5238512.005.jpg
case_images: PMC5828491_01_CRIOR2018-5238512.005.jpg
case_images: fig5
case_images: MRI (Figures 5(a) and 5(b)). Moreover, the tumor thrombus of
case_images: The tumor thrombus of IVC has completely vanished after irradiation and a 1 cycle of chemotherapy.
case_images: CRIOR2018-5238512.006.jpg
case_images: PMC5828491_01_CRIOR2018-5238512.006.jpg
case_images: fig6
case_images: IVC has completely vanished (Figure 6). In addition, we performed 3 cycles of chemotherapy. 4 years after the treatment, coin lesion of the left upper lung appeared (Figure 7).
case_images: Four years after the treatment, coin lesion in the left upper lung appeared.
case_images: CRIOR2018-5238512.007.jpg
case_images: PMC5828491_01_CRIOR2018-5238512.007.jpg
case_images: fig7
case_images: IVC has completely vanished (Figure 6). In addition, we performed 3 cycles of chemotherapy. 4 years after the treatment, coin lesion of the left upper lung appeared (Figure 7).
case_images: (a-c) 14 years after the surgery, the patient has remained with no evidence of recurrence.
case_images: CRIOR2018-5238512.008.jpg
case_images: PMC5828491_01_CRIOR2018-5238512.008.jpg
case_images: fig8
case_images: The histopathological diagnosis was equally Ewing sarcoma. 14 years after the surgery, the patient has been remained free of any evidence of recurrence and tumor thrombus (Figures 8(a)-8(c)).