Can MRI Foresee Kidney Damage After Nephrectomy? New Study Says Yes
USA: Researchers have found that preoperative multiparametric MRI (mpMRI) could help predict the risk of chronic kidney disease (CKD) in patients undergoing kidney surgery for solid renal masses (SRMs). The study, published in the Journal of Magnetic Resonance Imaging, suggests that advanced imaging may offer clinicians a valuable tool to identify patients at higher risk of post-surgical kidney function decline.
Patients with SRMs are known to face an elevated risk of CKD following partial or radical nephrectomy, yet until now, there has been no reliable method to estimate this risk before surgery. To address this gap, Mira M. Liu, PhD, and her team from the BioMedical Engineering and Imaging Institute at the Icahn School of Medicine, Mount Sinai, conducted a prospective study assessing whether mpMRI could predict CKD development and progression to stage III, defined as moderate kidney damage.
- Among 29 patients who completed 12-month follow-up, 19 had normal kidney function at baseline.
- Of these 19 patients, 7 (37%) developed stage III CKD.
- eGFR measured by DCE-MRI and tubule diffusion correlated with baseline kidney function (correlation coefficients 0.43 and 0.33, respectively).
- Reduced vascular diffusion on mpMRI predicted postoperative eGFR decline (AUC = 0.75).
- Larger contralateral corticomedullary ADC difference was a strong predictor of CKD development (AUC = 0.89).
- A higher clinical CKD risk score also strongly predicted CKD development (AUC = 0.81).
- These findings may indicate reduced renal functional reserve and highlight the potential of mpMRI for preoperative risk assessment and surgical planning.
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