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Related Concept Videos

Factors Affecting Renal Clearance: Renal Impairment01:17

Factors Affecting Renal Clearance: Renal Impairment

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Renal dysfunction significantly impairs the renal clearance of drugs, leading to potential complications in drug therapy. Renal failure, which can be caused by various factors, poses a significant challenge in the elimination of drugs from the body.
One condition associated with renal failure is uremia. Uremia is characterized by impaired glomerular filtration and fluid accumulation in the body. This condition hinders the renal clearance of drugs, resulting in drug accumulation and potential...
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Renal Corpuscle01:20

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The glomerulus and Bowman's capsule are two essential components of the nephron, which is the functional unit of the kidney. These microscopic structures play a critical role in the process of blood filtration to produce urine.
Glomerulus: Structure and Function
The glomerulus is a tiny, intricate network of capillaries located at the beginning of the nephron. It's enveloped by the Bowman's capsule and receives its blood supply from an afferent arteriole, which divides into numerous...
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Renal Clearance01:23

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The glomerular filtration rate (GFR) is a critical marker of kidney function, reflecting the efficiency of filtration by the glomeruli. Renal clearance of specific substances, such as inulin or creatinine, is commonly used to measure GFR.
Renal clearance refers to the volume of plasma cleared of a specific substance, such as creatinine, per unit of time. To measure clearance, urine samples are collected over a 24-hour period during each bladder voiding, followed by a single blood sample at the...
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Renal Drug Clearance: Comparison Between Renal Excretion Methods01:08

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Renal clearance is a critical parameter encompassing kidney filtration, secretion, and reabsorption processes. It is calculated using a specific equation to determine the rate at which the kidneys clear a drug.
Renal clearance is often associated with the renal glomerular filtration rate (GFR), which represents the rate at which plasma is filtered through the glomeruli in the kidney. When drug reabsorption is minimal and there is no active secretion, renal clearance is closely related to the...
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Drug Elimination: Non-Renal Routes01:23

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The liver plays a pivotal role in eliminating drugs and their metabolites, primarily through a process known as biliary excretion. This process involves the hepatocytes, the primary cells in the liver that generate bile. A range of transporters actively expels polar drugs or hydrophilic drug metabolites into the bile, which transports the drugs and metabolites into the small intestine. From here, they are eventually expelled from the body through feces. In some instances, the original drug or a...
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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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Updated: Feb 14, 2026

Development of Human Renal Tubular Epithelial Cell Primary Cultures in Monolayers and Three-Dimensional Conditions
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Primary Renal Epithelioid Angiosarcoma.

Muhammad Waqas1, Waqas Rahim1, Durre Shohab1

  • 1Department of Urology, Shifa International Hospital, Pitras Bukhari Road, Sector H-8/4, Islamabad.

Journal of the College of Physicians and Surgeons--Pakistan : JCPSP
|February 28, 2018
PubMed
Summary
This summary is machine-generated.

Epithelioid renal angiosarcoma, an extremely rare and aggressive cancer, presents as a solid renal mass. This case highlights its unique presentation and diagnostic markers.

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Area of Science:

  • Oncology
  • Pathology
  • Vascular Biology

Background:

  • Primary renal angiosarcoma is a rare malignancy.
  • The epithelioid variant is exceptionally rare and aggressive, with limited case reports.
  • It often mimics other renal cell carcinomas, presenting as a solid renal mass.

Observation:

  • A 62-year-old female presented with symptoms of an infected perinephric collection.
  • Imaging revealed a lower polar renal mass.
  • Histopathological examination showed a tumor with atypical epithelioid cells.

Findings:

  • Immunohistochemical analysis confirmed the tumor's dual vascular and epithelial markers.
  • Positive markers included FLI-1, CD 34, CD31, factor VII (vascular), and CKAE1/AE3 (epithelial).
  • Diagnosis was established as primary renal epithelioid angiosarcoma.

Implications:

  • This case contributes to the limited literature on epithelioid renal angiosarcoma.
  • Understanding its unique presentation and diagnostic profile is crucial for rare tumor management.
  • Further research is needed to establish effective treatment strategies for this aggressive entity.