Bilateral ureterocele with cobra head sign

Case contributed by Mohammad Taghi Niknejad
Diagnosis almost certain

Presentation

Chronic bilateral flank pain and hematuria.

Patient Data

Age: 40 years
Gender: Female

Dilatation of the distal ureter is noted bilaterally, more prominent on the right side, and surrounded by a thin lucent line resembling the cobra head sign.

Case Discussion

The cobra head sign refers to the dilatation of the distal ureter, surrounded by a thin lucent line, indicating an uncomplicated adult-type ureterocele.

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