hypospadias

Infant with a

urinary tract infection who was difficult to catheterize. AP (above) and lateral (below) images from a voiding cystourethrogram shows a large oval structure posterior to the posterior urethra that fills with contrast during voiding and which represents a large prostatic utricle.The diagnosis was hypospadias.

pediatricimaging.org • CC-by-nc-sa 4.0

Urethral

stricture • Multifocal urethral strictures in a patient with hypospadias - Ganzer Fall bei Radiopaedia

Niknejad, M. Multifocal urethral strictures in a patient with hypospadias. Case study, Radiopaedia.org. (accessed on 08 Nov 2022) https://doi.org/10.53347/rID-91807 • CC by-nc-sa 3.0 (modified)

Hypospadias

• Bladder neck stricture in a patient with hypospadias - Ganzer Fall bei Radiopaedia

Niknejad M, Bladder neck stricture in a patient with hypospadias. Case study, Radiopaedia.org (Accessed on 06 Jan 2023) https://doi.org/10.53347/rID-150043 • CC by-nc-sa 3.0 (modified)

Hypospadias

• Urethral stricture with prior hypospadias repair - Ganzer Fall bei Radiopaedia

Ashraf A, Urethral stricture with prior hypospadias repair. Case study, Radiopaedia.org (Accessed on 14 Apr 2024) https://doi.org/10.53347/rID-159725 • CC by-nc-sa 3.0 (modified)

Radiopaedia • CC-by-nc-sa 3.0 • de

Hypospadias refers to a type of congenital malformation affecting the male external genitalia.

Epidemiology

The estimated prevalence is ~2 (range 0.2-4.1) per 1000 live births.

Pathology

The urethral meatus is abnormally positioned proximally and ventrally to its normal position.

It is thought to be due to failure of fusion of the urethral groove secondary to either testosterone deficiency or end-organ insensitivity to testosterone.

Associations

Associated anomalies are common and include:

congenital vesico-ureteral reflux
cryptorchidism
inguinal herniation

Syndromic associations include:

Radiographic features

Antenatal ultrasound

May identify an anomalous distal morphology of the penis (where it loses its pointed end, which becomes blunter or straighter, in the form of a squashed cone).

There may be small lateral folds seen as longitudinal echogenic lines (dermal remains of the prepuce).

There may be a ventral curvature of the distal penis, extension of the penile glans beyond the prepuce, and evidence of fetal micturition in a plane perpendicular to the penile shaft .