Cobra head sign during IVU

Case contributed by Dr Levente István Lánczi


One year history of recurrent bladder infections.

Patient Data

Age: 50 years old
Gender: Female

Normal excretion and renal pelvis is seen on both sides.

No presence of stones or obstruction.

Ureterocoele is present on the left (see 21 min and 30 min images).

Cystoscopy confirmed a left-sided ureterocoele.

Case Discussion

A surrounding radiolucent halo is present at the distal end of the ureter filled with contrast media.

The cobra head sign is an indicator of an uncomplicated ureterocele.

Thanks to András Székely to his contribution.

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Case information

rID: 46539
Published: 7th Jul 2016
Last edited: 16th Jul 2018
System: Urogenital
Inclusion in quiz mode: Included

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