Related Experiment Video
Updated: May 19, 2026
05:19
A New Technique for Treating Low-risk Prostate Cancer—Super Active Surveillance
Published on: November 7, 2025
[Active surveillance for renal cell carcinoma]
Aktuelle Urologie
|August 8, 2012
Summary
Tumour biopsies help differentiate benign from malignant renal masses, but accuracy varies for subtype and grade. Active surveillance requires monitoring for tumour growth and metastasis, which remain unpredictable.
Area of Science:
- Urology
- Oncology
- Pathology
Context:
- Increasing incidence of renal cell carcinoma (RCC), particularly small tumours.
- Partial nephrectomy is standard, but ablative therapies and active surveillance are rising.
- Alternative treatments necessitate pretherapeutic tumour biopsy for diagnosis.
Purpose:
- To present results of tumour biopsy accuracy and active surveillance outcomes for renal masses.
- To evaluate the diagnostic yield of biopsies in distinguishing benign from malignant renal tumours.
- To assess the predictability of tumour growth and metastasis during active surveillance.
Summary:
- Renal mass biopsies correctly identify benign vs. malignant in 85% of cases.
- Histological subtype and grade are accurately diagnosed in 85% and 65% of RCC biopsies, respectively.
- Tumour growth and metastasis during active surveillance are currently unpredictable, often triggering active therapy.
Impact:
- Highlights the diagnostic limitations of renal mass biopsies.
- Underscores the challenges in predicting disease progression for patients on active surveillance.
- Informs clinical decision-making regarding the management of small renal masses.
Related Concept Videos
01:30Acute Kidney Injury IV: Diagnostic Studies and Prevention
Accurate diagnosis and effective prevention are critical in managing Acute Kidney Injury (AKI), which is linked to high mortality rates ranging from 10% to 80%. Timely recognition of at-risk patients and careful monitoring can significantly reduce the likelihood of kidney damage.Diagnostic Assessments:The diagnostic process starts with a comprehensive medical history to identify prerenal, intrarenal, and postrenal causes.Prerenal causes, such as dehydration, hypotension, or blood loss, should...
01:16Kidney Transplant III: Nursing Management
Postoperative Nursing Management for Kidney Transplant PatientsPostoperative nursing management care includes monitoring the surgical site, encouraging early movement, and promoting lung health through breathing exercises. Nurses also administer prescribed medications like H2-blockers, such as famotidine, or proton pump inhibitors, like omeprazole, to help prevent gastrointestinal ulcers and bleeding. Fungal infections in the mouth and bladder can result from immunosuppressive and antibiotic...
01:27Imaging Studies III: Computed Tomography
DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...
01:24Imaging Studies II: Ultrasonography
IntroductionUltrasonography, or renal ultrasound, is a noninvasive medical imaging technique that uses high-frequency sound waves to visualize the kidneys, ureters, bladder, and surrounding tissues.Indications for Urinary System UltrasonographyUrinary system ultrasonography is indicated in various clinical scenarios, such as:Kidney Stones (Urolithiasis): To detect and monitor the size and presence of kidney or urinary tract stones.Hydronephrosis: To assess the dilation of the renal pelvis and...
01:30Urinary 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)...
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...