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Urinary Bladder

Urinary Bladder

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...

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Procedures for Kidney StonesMedical intervention is necessary when kidney stones or renal calculi are too large to pass spontaneously (typically greater than 5 millimeters) when stones are accompanied by symptomatic infection (such as fever or pyelonephritis), when they impair kidney function, or when they cause persistent symptoms like severe pain, nausea, or urinary retention. Additionally, patients with only one kidney or those who cannot be treated with medical management also require...

Imaging Studies VI: Voiding Cystourethrography and Cystography

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Voiding Cystourethrography (VCUG) and Cystography are specialized radiographic procedures used to examine the structure and function of the bladder and urethra.Voiding Cystourethrography (VCUG)A Voiding Cystourethrogram (VCUG) is a diagnostic imaging procedure that assesses the anatomy and function of the lower urinary tract. It focuses on the bladder, bladder neck, and urethra, helping detect abnormalities such as vesicoureteral reflux (VUR)—the backward or reverse flow of urine into the...

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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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Updated: May 30, 2026

Minimally Invasive Establishment of Murine Orthotopic Bladder Xenografts

Minimally Invasive Establishment of Murine Orthotopic Bladder Xenografts

Published on: February 11, 2014

Bladder leiomyoma in a 6-year-old boy.

Hui Chen¹, Zhi Bin Niu, Yi Yang

¹Department of Pediatric Surgery, Shengjing Hospital, China Medical University, Heping District, Shenyang City, China.

|August 9, 2011

Summary

This report details a rare pediatric bladder leiomyoma case. Surgical excision is key for diagnosis and treatment, offering a good prognosis.

Area of Science:

Pediatric Urology
Oncology
Diagnostic Imaging

Background:

Bladder leiomyomas are exceptionally rare in pediatric patients.
This case represents only the second reported instance of bladder leiomyoma in a child since 1966.

Observation:

A 6-year-old boy presented with a bladder leiomyoma.
Imaging studies included ultrasonography, computed tomography, and histopathologic examination.

Findings:

Preoperative imaging aids in assessing tumor extent.
Definitive diagnosis relies on histopathologic examination.
Surgical excision is the preferred method for diagnosis and treatment.

Implications:

Early diagnosis and complete surgical resection are crucial for favorable outcomes.

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This case highlights the importance of considering rare diagnoses in pediatric urology.

Further research may improve understanding and management of pediatric bladder leiomyomas.