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Related Concept Videos

Urinary Bladder01:23

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...
Nursing Assessment of the Genitourinary System II: Inspection and Palpation01:26

Nursing Assessment of the Genitourinary System II: Inspection and Palpation

The nursing assessment of the genitourinary (GU) system involves a systematic inspection and palpation to identify abnormalities in the kidneys, bladder, and surrounding structures.InspectionMouth: Inspect for signs of kidney dysfunction, such as stomatitis (inflammation of the mouth) and ammonia breath, which may occur in advanced kidney disease due to the buildup of urea, breaking down into ammonia.Skin: Check for pallor, which could indicate anemia caused by kidney disease. Look for...
Anatomy of the Genitourinary System II: Bladder and Urethra01:19

Anatomy of the Genitourinary System II: Bladder and Urethra

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...
Urinary Tract Calculi III: Medical Management01:30

Urinary Tract Calculi III: Medical Management

The diagnosis of renal calculi involves several imaging techniques, including non-contrast CT scans and ultrasound. These methods help visualize kidney stones, assess their size and location, and detect possible obstructions. Additionally, Measuring urine pH is useful for diagnosing specific stone types, such as struvite (alkaline pH) and uric acid stones (acidic pH). Cystine stones are primarily linked to cystinuria, a genetic condition. A urinalysis helps detect blood in the urine (hematuria)...
Urinary Tract Calculi II: Pathophysiology and Clinical Manifestations01:26

Urinary Tract Calculi II: Pathophysiology and Clinical Manifestations

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...
Urinary Tract Calculi I: Introduction01:28

Urinary Tract Calculi I: Introduction

Renal calculi, or kidney stones, are solid deposits of minerals and salts formed inside the kidneys. In medical terminology, "calculus" refers to the stone itself, while "lithiasis" describes the process of stone formation. Depending on their location within the urinary system, these stones may be classified as either urolithiasis, when situated within the urinary tract, or nephrolithiasis, when located within the kidneys. Each term signifies the specific impact of the stone.Predisposition...

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Related Experiment Video

Updated: Jun 17, 2026

Magnetic Resonance Imaging Assessment of Carcinogen-induced Murine Bladder Tumors
05:19

Magnetic Resonance Imaging Assessment of Carcinogen-induced Murine Bladder Tumors

Published on: March 29, 2019

Urinary bladder mass in a dog.

H B Gelberg1

  • 1Department of Biomedical Sciences and the Veterinary DiagnosticLaboratory, College of Veterinary Medicine,Oregon State University, Corvallis, OR 97331, USA. howard.gelberg@oregonstate.edu

Veterinary Pathology
|January 19, 2010
PubMed
Summary
This summary is machine-generated.

A Schnauzer dog with chronic hematuria was diagnosed with canine polypoid eosinophilic cystitis, a benign inflammatory fibrous polyp of the bladder. Surgical excision and histological examination confirmed the diagnosis, offering a favorable prognosis.

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Area of Science:

  • Veterinary Pathology
  • Canine Urology
  • Surgical Oncology

Background:

  • Chronic hematuria in dogs can indicate various urological conditions.
  • Soft tissue masses in the bladder wall require thorough histopathological evaluation.
  • Distinguishing benign from malignant bladder masses is crucial for treatment planning.

Observation:

  • A 7-year-old spayed female Schnauzer presented with chronic hematuria.
  • A soft tissue mass was identified within the bladder wall.
  • Histological examination revealed a well-organized mural mass with spindloid cells and eosinophils.

Findings:

  • The mass was consistent with canine polypoid eosinophilic cystitis (benign inflammatory fibrous polyp).
  • Histology showed ulcerated and hyperplastic transitional mucosa with submucosal tubular structures.
  • The lesion was surgically excised.

Implications:

  • This case highlights the importance of histopathology in diagnosing bladder masses in dogs.
  • Canine polypoid eosinophilic cystitis is a treatable condition with surgical intervention.
  • Accurate diagnosis prevents unnecessary aggressive treatment for benign conditions.