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Related Concept Videos

Anatomy of the Genitourinary System II: Bladder and Urethra01:19

Anatomy of the Genitourinary System II: Bladder and Urethra

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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...
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The human urogenital system, once thought to be sterile in healthy individuals, is now recognized as a complex microbial habitat. Advancements in molecular sequencing techniques have revealed that even in healthy adults, the kidneys and bladder harbor microbial populations similar to those found in the distal urethra, albeit in much lower abundance. These resident microorganisms, while generally innocuous, can become opportunistic pathogens under conditions that alter the urogenital...
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Urethra01:16

Urethra

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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...
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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.
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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...
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Urinary Tract Calculi II: Pathophysiology and Clinical Manifestations

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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...
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Related Experiment Video

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Recurrent Escherichia coli Urinary Tract Infection Triggered by Gardnerella vaginalis Bladder Exposure in Mice
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Urethral diverticula in women.

Tamsin J Greenwell1, Marco Spilotros1

  • 1Department of Urology, University College London Hospital, Ground Floor North, 250 Euston Road, London NW1 2PG, UK.

Nature Reviews. Urology
|October 14, 2015
PubMed
Summary

Female urethral diverticula, though rare, cause urinary incontinence and pain. Vaginal excision offers a highly effective treatment with a low recurrence rate and significant symptom improvement.

Area of Science:

  • Urology
  • Gynecology

Background:

  • Female urethral diverticula are uncommon, benign outpouchings of the urethra.
  • Symptoms like urinary incontinence, recurrent UTIs, and dyspareunia are often misdiagnosed.
  • Accurate diagnosis requires clinical examination, MRI, and videocystometrography.

Purpose of the Study:

  • To review the diagnosis and treatment of female urethral diverticula.
  • To assess the efficacy and safety of vaginal excision for female urethral diverticula.

Main Methods:

  • Review of clinical presentation, diagnostic modalities (MRI, videocystometrography), and surgical treatment (vaginal excision).
  • Evaluation of treatment outcomes, including recurrence rates, symptom resolution, and adverse effects.

Main Results:

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  • Vaginal excision is the preferred treatment with low recurrence and high patient satisfaction.
  • Significant improvement in dyspareunia, UTIs, and voiding dysfunction post-excision.
  • 50% of patients with pre-existing stress urinary incontinence (USUI) see resolution after surgery.

Conclusions:

  • Vaginal excision is a safe and effective treatment for female urethral diverticula.
  • The procedure offers high cure rates for associated symptoms and potential resolution of USUI.
  • Adverse effects are infrequent and associated with diverticulum complexity and MRI findings.