Case Report
Copyright ©The Author(s) 2021.
World J Clin Cases. Feb 6, 2021; 9(4): 838-846
Published online Feb 6, 2021. doi: 10.12998/wjcc.v9.i4.838
Figure 1
Figure 1 Abdominal ultrasound revealed the doughnut sign, measuring 4. 5 cm × 4.6 cm.