Related Experiment Video
Updated: Feb 17, 2026

Assessing Urinary Tract Junction Obstruction Defects by Methylene Blue Dye Injection
Published on: October 12, 2017
The Association of Congenital Urethral Duplication and Double Megalourethra
Murat Uçar1, Ahsen Karagözlü Akgül1, Nizamettin Kılıç1
1Department of Pediatric Surgery, Division of Pediatric Urology, Uludağ University School of Medicine, Bursa, Turkey.
Background:
Urethral duplication and megalourethra are rare urethral anomalies. However, the concomitance of urethral duplication and double megalourethra has not been reported previously.
Case Report:
A newborn was presented with penile swelling during voiding. Physical examination revealed a retractable foreskin and two external meatus of a double urethra. Retrograde urethrography demonstrated two complete megalourethras. Urethro-urethrostomy and urethroplasty were performed when the patient was 10 months old. The patient was followed up for one year without any urinary problems and has good cosmetics and urinary continence.
Conclusion:
The concomitance of these two rare anomalies and more importantly its surgical treatment makes this case report unique and valuable.
Related Concept Videos
Urethra
The anatomy of the urethra differs between males and females. In females, the urethra is short, measuring about 3–4 cm in length, and opens anterior to the vaginal opening. In males, the urethra is longer and passes through the penis, serving dual purposes: expelling urine and ejaculating semen. The male...
Anatomy of the Genitourinary System II: Bladder and Urethra
Ureters
Accessory Glands of the Male Reproductive System
The epididymis is a small, comma-shaped organ located at the back of each testicle. The epididymis can be divided into three main parts: the head, body, and tail. The head of the epididymis...
Urinary Bladder
In males, the bladder is situated in front of the rectum, while in females, it is positioned anterior to the vagina and uterus. The bladder floor contains an inverted triangular area called the trigone, defined by the two ureteric...
Urinary Tract Calculi II: Pathophysiology and Clinical Manifestations

