Related Experiment Videos
Therapy-resistant nephrolithiasis following renal artery coil embolization
Cédric Poyet1, Florian Grubhofer, Matthias Zimmermann
1Department of Urology, University Hospital Zürich, University of Zürich, Frauenklinikstrasse 10, 8091 Zürich, Switzerland. cedric.poyet@usz.ch
BMC Urology
|June 14, 2013
Summary
Migrated renal artery coils can cause therapy-resistant kidney stones years after embolization. Flexible ureterorenoscopy with holmium laser effectively removes these rare, complex stones and the embedded coil.
Area of Science:
- Nephrology
- Interventional Radiology
- Urology
Background:
- Transcatheter renal artery embolization is a minimally invasive treatment for renal bleeding.
- Coil migration is a rare but known late complication of this procedure.
Observation:
- A patient developed therapy-resistant kidney stones four years after renal artery coil embolization.
- The stones were found to be adherent to an intraluminal migrated metal coil within the renal calyx.
Findings:
- Extracorporeal shock wave lithotripsy was ineffective for the coil-associated stones.
- Flexible ureterorenoscopy successfully identified and removed the stone and the migrated coil using holmium laser lithotripsy.
Implications:
- Migrated renal coils can lead to the formation of complex, therapy-resistant nephrolithiasis.
- Retrograde intrarenal surgery is effective for diagnosing and treating these rare composite stones.
- This case highlights the importance of considering migrated embolic material in refractory stone disease.
Related Concept Videos
01:28Urinary Tract Calculi V: Nursing Management
AssessmentSubjective Data: Obtain a detailed health history, including any recent or chronic urinary tract infections, periods of immobilization, previous episodes of renal calculi, and medical conditions such as gout, benign prostatic hyperplasia, or hyperparathyroidism. Review the medication history for drugs that may influence stone formation, including allopurinol, analgesics, loop diuretics, or thiazide diuretics. Document the use of long-term indwelling catheters and any past surgical...
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)...
01:25Urinary Tract Calculi VI: Surgical Management
Procedures for Kidney StonesMedical intervention is necessary when kidney stones or renal calculi are too large to pass spontaneously (typically greater than 5 millimeters) when stones are accompanied by symptomatic infection (such as fever or pyelonephritis), when they impair kidney function, or when they cause persistent symptoms like severe pain, nausea, or urinary retention. Additionally, patients with only one kidney or those who cannot be treated with medical management also require...
01:27Urinary Tract Calculi IV: Nutrition Therapy and Prevention
Management of renal calculi focuses on effective strategies like tailored nutrition and hydration therapy. Adjusting diet and fluid intake reduces stone formation and recurrence, making these interventions simple yet powerful in kidney stone prevention and management.Understanding Kidney StonesKidney stones form when calcium, oxalate, uric acid, and cystine concentrate and crystallize in urine. Factors contributing to their formation include genetic predisposition, certain medical conditions,...
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...
01:26Kidney Transplant II: Surgical Procedure
Preoperative ManagementThe primary goals of preoperative management in kidney transplantation are to optimize the patient’s metabolic state and prepare them for surgery through diet adjustments, necessary dialysis, and tailored medical treatment. This phase also involves comprehensive infection screening and patient education about the surgical procedure and postoperative care to improve outcomes and adherence.Medical ManagementA comprehensive evaluation is required for both the living donor...