Interest of Magnetic Resonance Imaging in the Diagnosis of Upper Urinary Tract Invasive Tumours (UUTICaD)

Toulouse University Hospital

Status

Not yet enrolling

Conditions

Magnetic Resonance Imaging (MRI)

Urologic Cancer

Treatments

Radiation: Upper urinary tract magnetic resonance imaging

Study type

Interventional

Funder types

Other

Identifiers

NCT07252882

RC31/23/0389

Details and patient eligibility

About

Upper urinary tract invasive cancer magnetic resonance imaging diagnosis

Full description

Urothelial tumours are the 6th most common cause of cancer in developed countries and occur throughout the urinary tract (urethra, bladder, ureter and pelvic cavities). Upper urinary tract tumours account for 5-10% of urothelial carcinomas. Nearly 60% of patients with upper urinary tract tumours are diagnosed as invasive (≥ T2). 90% of computed tomography lesions are tumour lesions. Currently, the diagnosis of upper urinary tract tumours is based on computed tomography with injection of nephrotoxic iodinated contrast medium (uro-computed tomography) and biopsies taken during ureteroscopy under general anaesthesia. Invasive tumours have a poor prognosis and patients with infiltrating tumours may benefit from neoadjuvant chemotherapy prior to nephroureterectomy (which may impair renal function). Uro-computed tomography cannot differentiate between invasive and non-invasive tumours and biopsies taken in the operating theatre during ureteroscopy under general anaesthesia are unreliable for staging and frequently underestimate the disease. The diagnosis of infiltrating tumours is most often made on nephro-ureterectomy specimens, making neoadjuvant treatment impossible. Recently, functional magnetic resonance imaging sequences (diffusion weighted imaging, apparent diffusion coefficient) highlighted the biophysical properties of the tissues such as cellular organisation, density and microcirculation and have thus made it possible to differentiate benign from malignant lesions by identifying the level of tissue involvement. Magnetic resonance imaging has become a real tool in the diagnosis of bladder tumours and can differentiate between infiltrating and non-infiltrating lesions.

The aim of this study is to make magnetic resonance imaging for each patient and compare results to pathological analysis (nephro-ureterectomy pathologic analysis or biopsy with 3 months Uro-computed tomography) to evaluate magnetic resonance imaging diagnosis capability for invasive tumour.

Enrollment

178 estimated patients

Sex

All

Ages

18+ years old

Volunteers

No Healthy Volunteers

Inclusion criteria

Patient over 18 years of age with a suspected upper urinary tract tumour based on the presence of a suspicious lesion on a uro-computed tomography scan
Have given free, informed and signed consent
Be affiliated to a social security scheme

Exclusion criteria

Renal failure not allowing the injection of iodinated contrast media (Glomerular filtration rate <30mL/min)
Subject under legal protection (guardianship or curatorship)
Pregnant or breastfeeding woman
Person participating in another research study or having participated in a protocol with an exclusion period still in progress at inclusion
Contraindication to magnetic resonance imaging (patient with non-magnetic resonance imaging compatible equipment, claustrophobia preventing magnetic resonance imaging)
Acide gadoteric hypersensibility