Urachal cyst

Case contributed by Bruno Di Muzio


History of diffuse abdominal pain, no other symptoms.

Patient Data

Age: 20 years
Gender: Male

CT Abdomen and pelvis


Small rounded cyst localized in the midline in between the bladder dome and the umbilicus, with the collapsed urachal remnants seen attaching to the upper and lower margins of the lesion. Also, ectopic pelvic left kidney.


Illustration by Matt Skalski explaining the abnormality seen in this case. 

Case Discussion

Urachal cyst appears, as in this case, as a collection of simple fluid localized in the midline of the anterior abdominal wall, between the umbilicus and the pubis and near the bladder dome.

This patient has also an ectopic pelvic left kidney.

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