Related Experiment Video
Updated: Mar 22, 2026

06:05
Assessing Urinary Tract Junction Obstruction Defects by Methylene Blue Dye Injection
Published on: October 12, 2017
16.3K
Urethral duplication with unusual cause of bladder outlet obstruction
Vivek Venkatramani1, Arun Jacob Philip George1, J Chandrasingh1
1Department of Urology, Christian Medical College, Vellore, Tamil Nadu, India.
Summary
A 12-year-old boy with recurrent urinary tract infections and poor urinary flow was diagnosed with urethral duplication. Surgical correction via urethro-urethrostomy successfully resolved his symptoms.
Area of Science:
- Pediatric Urology
- Genitourinary Surgery
- Congenital Anomalies
Background:
- Hypospadias repair in childhood can rarely lead to complex urethral anomalies.
- Recurrent urinary tract infections and poor urinary flow are significant indicators of underlying genitourinary pathology.
Observation:
- A 12-year-old male presented with symptoms secondary to a complex urethral anomaly post-hypospadias repair.
- Imaging revealed urethral duplication with a hypoplastic dorsal urethra and a patent ventral urethra, alongside bladder neck duplication.
Findings:
- Voiding cystourethrogram demonstrated a hypoplastic ventral bladder neck compressed by the dorsal component during micturition.
- Functional obstruction of the ventral urethra was suspected due to the occluded dorsal urethra.
Implications:
- Successful urethro-urethrostomy offers a viable treatment for complex urethral duplication causing functional obstruction.
- This case highlights the importance of thorough evaluation for persistent voiding dysfunction after hypospadias surgery.
Related Concept Videos
Disorders of the Urinary System
1.8K
The urinary system is responsible for eliminating waste and excess fluids from the body. However, disorders of the urinary system can arise due to various reasons like infections, stress, age, congenital abnormalities, and lifestyle.
Urinary tract infections (UTIs) are one of the most common urinary system disorders. They are caused by bacteria that enter the urethra and can spread to the bladder resulting in cystitis. Pyelonephritis is the result of a UTI that has ascended to the level of the...
Urinary tract infections (UTIs) are one of the most common urinary system disorders. They are caused by bacteria that enter the urethra and can spread to the bladder resulting in cystitis. Pyelonephritis is the result of a UTI that has ascended to the level of the...
1.8K
Anatomy of the Genitourinary System II: Bladder and Urethra
2.5K
The lower urinary system consists of the urinary bladder and urethra, which are essential in storing and expelling urine from the body. Together with the internal and external sphincters, these structures work together to regulate urination effectively.Anatomy of the BladderThe urinary bladder is a muscular, stretchable organ behind the pubic bone and in front of the rectum. In females, the bladder is positioned anterior to the vagina and inferior to the uterus, while in males, it is located...
2.5K
Ureters
2.0K
The ureters are retroperitoneal tubes located on either side of the vertebral column. They are responsible for transporting urine from each kidney to the urinary bladder. These tubes have thick walls and are approximately 25-30 cm long. Their diameter is around 10 mm at the renal pelvis, gradually narrowing to 1 mm as the ureter obliquely enters the posterior bladder wall through the ureteric orifices. The shape of these orifices is slit-like, which helps to prevent urine backflow toward the...
2.0K
Urinary Bladder
4.2K
The urinary bladder is a hollow, muscular sac that temporarily stores urine before it is expelled from the body. It can hold approximately 600 mL of urine prior to micturition. The bladder is retroperitoneal and located behind the pubic symphysis in the pelvic floor.
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...
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...
4.2K
Urethra
5.7K
The urethra is a hollowed tubular organ through which urine is expelled from the body. This structure extends from the bladder to the external opening, allowing urine to be released.
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...
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...
5.7K
Urinary Tract Calculi II: Pathophysiology and Clinical Manifestations
579
Renal calculi, commonly termed kidney stones, are crystalline solid masses that form in the kidneys but can occur at any point within the urinary system, encompassing the kidneys, ureters, bladder, and urethra.The pathophysiology of renal stones involves several key factors: supersaturation of the urine with stone-forming constituents, changes in urine pH, a decrease in urine volume, and the presence of substances that promote or inhibit stone formation.Supersaturation of Urine: This is the...
579

