Fig. 1

Ultrasound images a US showed a cystic lesion measuring 40 mm in diameter, which had unclear boundaries and appeared hypoechoic in the inguinal canal. b The color Doppler scan did not show any internal blood vessel distribution. c CT showed the inside of the cystic lesion was liquid, with irregular hypertrophy of the cyst wall. d CT coronal image shows that the cystic is not communicating with the abdominal cavity