Related Experiment Video
Updated: Jul 17, 2026
06:12
Technical Aspects of the Mouse Aortocaval Fistula
Published on: July 11, 2013
[Renal arteriovenous fistula]
H Primus1, M Samtleben, E Schmitt
1Klinik für Urologie, Kreiskliniken Aschersleben-Strassfurt GmbH, Aschersleben. heiko.primus@mdk-san.de
Der Urologe. Ausg. A
|January 16, 2007
Summary
Arteriovenous malformations are rare causes of kidney lesions. This case report details a large arteriovenous fistula in a patient initially suspected of having renal cell carcinoma, successfully treated with nephrectomy.
Area of Science:
- Urology
- Diagnostic Imaging
- Vascular Malformations
Background:
- Arteriovenous malformations (AVMs) are uncommon yet critical differential diagnoses for renal lesions of unknown origin.
- Space-occupying renal lesions often raise suspicion for malignancy, necessitating comprehensive diagnostic evaluation.
Observation:
- A 41-year-old patient presented with persistent right flank pain.
- Initial computed tomography (CT) suggested renal cell carcinoma.
- Advanced imaging, including contrast-enhanced CT, duplex sonography, renovasography, and MR-angiography, identified a large arteriovenous fistula involving the entire right kidney.
Findings:
- The diagnostic workup revealed a significant arteriovenous fistula, not a renal cell carcinoma.
- The fistula's large size and aneurysmal characteristics prompted surgical intervention.
Implications:
- This case highlights the importance of considering arteriovenous malformations in the differential diagnosis of renal masses.
- Accurate diagnosis through advanced imaging is crucial for appropriate management of renal vascular anomalies.
- Nephrectomy can be an effective treatment for large, symptomatic renal arteriovenous fistulas, leading to complete symptom resolution.
Related Concept Videos
01:25Hemodialysis I: Introduction
Hemodialysis (HD) is a medical treatment that artificially removes waste products, excess fluids, and toxins from the blood when the kidneys are no longer able to perform these functions effectively. In this process, blood is filtered through a semipermeable membrane, allowing for the selective removal of waste while preserving necessary components like blood cells and proteins. Hemodialysis is typically performed in patients with end-stage renal disease (ESRD) or severe kidney...
01:30Continuous Renal Replacement Therapy
Continuous Renal Replacement Therapy, also known as CRRT, is a procedural treatment for acute kidney injury (AKI) that gradually removes uremic toxins and fluids while maintaining acid-base balance and stabilizing electrolytes. It is particularly useful for hemodynamically unstable patients. Unlike intermittent hemodialysis, which is faster, CRRT provides a gentler approach over 24 hours, closely mimicking the function of natural kidneys. However, CRRT is not ideal for patients with...
01:19Imaging Studies VII: Vascular Imaging
DefinitionRenal angiography, also known as renal arteriography, is an imaging technique used to obtain a comprehensive view of blood flow and the vascular structure of blood vessels in the kidneys and surrounding areas.PurposeRenal angiography detects blood vessel abnormalities in the kidneys, such as aneurysms, stenosis, thrombosis, vascular tumors, and renal artery stenosis. It evaluates kidney function and guides interventional treatments like angioplasty or stent placement.Pre-Procedure...
01:24Hemodialysis II: Procedure and Complications
DialyzersA hemodialysis (HD) dialyzer is a plastic cartridge containing thousands of parallel hollow fibers, which serve as semipermeable membranes. These fibers are typically made from cellulose-based or other synthetic materials. During HD, blood is pumped into the top of the cartridge and distributed among these fibers. Simultaneously, dialysis fluid, known as dialysate, is introduced into the bottom of the cartridge, bathing the outside of the fibers. Across the semipermeable membrane,...
01:20Renal Corpuscle
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 capillaries...
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 capillaries...
01:26Extracorporeal Removal of Drugs: Continuous Renal Replacement Therapy
Continuous Renal Replacement Therapy (CRRT) is an essential intervention for patients experiencing severe kidney dysfunction. This therapy offers a continuous mechanism for removing fluids and toxins from the bloodstream, leveraging the patient’s blood pressure to facilitate filtration through a specialized filter. This method contrasts with intermittent dialysis, providing a gentler and more consistent removal of waste products and excess fluid, which is particularly beneficial in critically...