Presentation
Urinary tract infection. Ultrasound revealed left mild hydronephrosis.
Patient Data
Age: 13 years
Gender: Male
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Bilateral duplex moieties with left sided ureterocoele.
There is clear demarcation of two separate moieties in each kidney depicted in the pyelographic phase of urogram. Of note in the urinary bladder filling phase is a well defined radiolucent halo, also described as the cobra head sign, seen in ureterocele.
Micturating cystourethrogram
From the case:
Bilateral duplex kidneys with left-sided uterocoele
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Left-sided ureterocoele is demonstrated as the last to empty with residual urine hold up within it.