urethral duplication

Voiding
cysto-urethrography of complete urethral duplication in a child, a case report. VCUG of presented case. “A” is preliminary imaging, “B” is early filling image, “C” is left anterior oblique view(LAO) image, “D” is right anterior oblique view(RAO) image and “E” is voiding phase image. Dashed arrow (upper) shows distal opening of accessory urethra and solid arrow (lower) shows distal opening of main urethra. As shown in picture “E” there are two urethras arising from bladder with different proximal and distal orifices
ejrnm.springeropen.com • CC-by-4.0
Voiding
cysto-urethrography of complete urethral duplication in a child, a case report. Effmann’s classification for urethral duplication
ejrnm.springeropen.com • CC-by-4.0
Urethral
duplication associated with complex chordee: a narrative review of literature and report of a case. Pre-op and post-op appearances of the penis a pre-op penis at rest; b combined retrograde urethrography {orange arrow} and fistulography {blue arrow}; c appearance of the penis with artificial erection intra-op showing the dorsal meatus {blue arrow}; d appearance of penis 5th day post-op
afju.springeropen.com • CC-by-4.0
Radiopaedia • CC-by-nc-sa 3.0 • de

Urethral duplication is a rare condition in which either a part of the entire urethra is duplicated. It usually occurs in the sagittal plane and the more dorsal copy is usually the duplication.

Pathology

A urethral duplication may occur due to a variety of developmental miscues. In a woman, it is thought to arise from delayed fusion of the Mullerian ducts and urogenital sinus .

Radiographic features

In males, a partial or complete duplication of the urethra can be seen with urethography. In males, two separate meatuses with the ability to void through both is a more common configuration.

Possible duplication of the female urethra is better studied with MRI.  Two high signal-intensity central spots may be apparent on an axial view of the pelvis in the region of the urethra.

Treatment and prognosis

A small retrospective study (n=20) found the use of both buccal and urinary bladder mucosa for urethral repair have good results and that Y-type urethral duplication is most difficult to repair surgically .

Differential diagnosis

In a male, hypospadias can be considered (glanular dimple not patent).

Siehe auch:
und weiter:
Assoziationen und Differentialdiagnosen zu Harnröhrenduplikatur:
Duplikatur
der Harnblase
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