Urethral duplication is a rare condition in which either a part or the entire urethra is duplicated. It usually occurs in the sagittal plane and the more dorsal copy is usually the duplication.
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 2.
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.
In a male, hypospadias can be considered (glanular dimple not patent).
- 1. Onofre LS, Gomes AL, Leão JQ et-al. Urethral duplication-a wide spectrum of anomalies. J Pediatr Urol. 2013;9 (6): 1064-71. doi:10.1016/j.jpurol.2013.03.006 - Pubmed citation
- 2. Siegelman ES, Banner MP, Ramchandani P et-al. Multicoil MR imaging of symptomatic female urethral and periurethral disease. Radiographics. 1997;17 (2): 349-65. doi:10.1148/radiographics.17.2.9084077 - Pubmed citation
- 3. Coleman RA, Winkle DC, Borzi PA. Urethral duplication: cases of ventral and dorsal complete duplication and review of the literature. J Pediatr Urol. 2010;6 (2): 188-91. doi:10.1016/j.jpurol.2009.07.006 - Pubmed citation
- 4. AbouZeid AA, Safoury HS, Mohammad SA et-al. The double urethra: revisiting the surgical classification. Ther Adv Urol. 2015;7 (2): 76-84. doi:10.1177/1756287214561760 - Free text at pubmed - Pubmed citation