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Related Concept Videos

Disorders of the Urinary System01:20

Disorders of the Urinary System

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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...
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Ureters01:22

Ureters

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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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Disorders of the Male Reproductive System01:20

Disorders of the Male Reproductive System

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Men's health issues are increasingly recognized as significant, with several conditions posing common threats. Among these, testicular cancer is especially prevalent in younger men, particularly those aged 20 to 35 years. The disease often manifests as a painless mass in the testicles, sometimes accompanied by a sensation of heaviness or a dull ache.
Prostate disorders are another major concern. These conditions can impair urinary flow due to the prostate's location around the urethra....
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Renal Tubule and Collecting Duct01:24

Renal Tubule and Collecting Duct

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The renal tubule is divided into three parts: the proximal convoluted tubule (PCT), the Loop of Henle (LOH), and the distal convoluted tubule (DCT).
Proximal Convoluted Tubule (PCT):
The PCT is the initial segment of the renal tubule, extending from the Bowman's capsule that encloses the glomerulus. Its convoluted structure and microvilli-lined cells increase the surface area for reabsorption. The PCT reabsorbs glucose, amino acids, sodium, and water from the filtrate, ensuring essential...
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Physiology of Urine Formation01:24

Physiology of Urine Formation

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Urine formation is an essential function of the human body. It plays a critical role in maintaining homeostasis by regulating the volume and composition of body fluids. The kidneys, the primary organs involved in this process, filter blood to remove waste products and excess substances, ultimately producing urine.
Glomerular Filtration
The first stage in urine formation is glomerular filtration. Each kidney contains approximately 1 million nephrons, the functional units of filtration, with a...
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Related Experiment Video

Updated: May 29, 2025

Assessing Urinary Tract Junction Obstruction Defects by Methylene Blue Dye Injection
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Pediatric Genitourinary Tumors: The Developmental Angle.

Claudia M Salgado1, Catherine K Gestrich2, Miguel Reyes-Múgica3

  • 1Department of Pathology and Laboratory Medicine, University of Miami Miller School of Medicine, Jackson Memorial Hospital Children's Holtz, 1611 Northwest 12th Avenue, Suite 2153 A, Miami, FL 33136, USA. Electronic address: https://twitter.com/clamsalgado.

Surgical Pathology Clinics
|January 31, 2025
PubMed
Summary
This summary is machine-generated.

Pediatric renal and genitourinary cancers are rare, posing diagnostic challenges. This review highlights key diagnostic features using histopathology, immunophenotyping, and molecular data for these uncommon childhood neoplasms.

Keywords:
Clear cell sarcomaGenitourinary inflammatory myofibroblastic tumorGenitourinary rhabdomyosarcomaMalignant rhabdoid tumor of the kidneyMesoblastic nephromaPediatric cystic nephromaRenal Ewing sarcomaWilms tumor

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Area of Science:

  • Pediatric Oncology
  • Nephropathology
  • Uropathology

Background:

  • Pediatric cancers are less common than adult malignancies, with most affecting the hemopoietic and central nervous systems.
  • Among solid extracranial tumors in children, renal and genitourinary lesions are frequent, predominantly Wilms tumors.
  • The rarity of other pediatric renal and genitourinary neoplasms presents significant diagnostic challenges.

Purpose of the Study:

  • To review critical diagnostic information for pediatric renal and genitourinary neoplasms.
  • To integrate novel histopathological, immunophenotypical, and molecular data for improved diagnosis.
  • To address the diagnostic challenges posed by rare childhood genitourinary and kidney cancers.

Main Methods:

  • Review of current literature on pediatric renal and genitourinary neoplasms.
  • Analysis of diagnostic criteria including histopathology.
  • Integration of immunophenotypical and molecular findings.

Main Results:

  • Wilms tumors and variants are the most common pediatric renal neoplasms.
  • Diagnostic challenges exist for rarer pediatric genitourinary and kidney tumors.
  • Histopathological, immunophenotypical, and molecular data are crucial for accurate diagnosis.

Conclusions:

  • Accurate diagnosis of pediatric renal and genitourinary neoplasms requires a multidisciplinary approach.
  • Novel diagnostic techniques enhance the identification of rare pediatric cancers.
  • Understanding these rare tumors is vital for effective pediatric cancer management.