Fig. 1.

A 15-day-old female infant presented with palpable mass in the right inguinal region. A– C. Transverse (A) and longitudinal (B, C) gray scale ultrasound (US) reveals a well-circumscribed, oval, hypoechoic solid mass with internal small cysts in the right inguinal area, and there is no evidence of peristalsis or fat within the mass. And the lesion extends to the abdominal cavity through the canal of Nuck (arrows). These sonographic findings suggest that the herniated content is the right ovary. D, E. On color Doppler US, blood flow is seen at the canal of Nuck, representing ovarian vessel. However, no blood flow was seen within the mass. This finding strongly suggests a strangulation of the ovary.