Young Girl With Abdominal Pain Huan-Wen Hsu, MD, Ying-Hock Teng, MD, PhD, Chao-Bin Yeh, MD, PhD, Sai-Wai Ho, MD  Annals of Emergency Medicine  Volume 70, Issue 4, Pages e39-e40 (October 2017) DOI: 10.1016/j.annemergmed.2017.04.025 Copyright © 2017 American College of Emergency Physicians Terms and Conditions

Figure 1 Transabdominal ultrasonographic view of the right lower quadrant, demonstrating a cystic mass with 1-cm wall thickening. Annals of Emergency Medicine 2017 70, e39-e40DOI: (10.1016/j.annemergmed.2017.04.025) Copyright © 2017 American College of Emergency Physicians Terms and Conditions

Figure 2 Ultrasonographic view showing absent kidney in right hepatorenal fossa (star) between the liver (X) and psoas muscle (cross) (left panel). Normal contralateral left kidney (asterisk) (right panel). Annals of Emergency Medicine 2017 70, e39-e40DOI: (10.1016/j.annemergmed.2017.04.025) Copyright © 2017 American College of Emergency Physicians Terms and Conditions

Figure 3 Coronal CT of the abdomen, demonstrating right renal agenesis (white arrow) and uterus didelphys (black arrows); note the obstructive hematometra in the right hemiuterus. Annals of Emergency Medicine 2017 70, e39-e40DOI: (10.1016/j.annemergmed.2017.04.025) Copyright © 2017 American College of Emergency Physicians Terms and Conditions