Posterior urethral valve (perineal ultrasound)

Case contributed by Padmapriya Govindarajan
Diagnosis certain

Presentation

Infant with urinary tract infection. No previous imaging.

Patient Data

Age: 45 days
Gender: Male

Transabdominal scan

ultrasound

Ultrasound shows thickened and trabeculated bladder wall and bilateral hydroureteronephrosis.

Transperineal scan

ultrasound

Perineal view of the urethra shows grossly dilated posterior urethra with a valve noted in the distal posterior urethra. 

Micturating cystourethrogram

Fluoroscopy

MCU image shows thickened and trabeculated bladder with dilated posterior urethra giving a "spinning top" appearance. On the video recording, posterior urethral valve shows a diaphragm like appearance on the MCU with a thin anterior urinary stream. 

Case Discussion

The patient underwent surgery and was confirmed to have a posterior urethral valve and underwent resection of the valve. 

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