ArticleAbdominal radiology (New York)2026
The association between preoperative pseudocapsule integrity on magnetic resonance imaging and the pathological features of clear cell renal cell carcinoma.
Article in Abdominal radiology (New York), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectiveTo investigate the correlation between preoperative magnetic resonance imaging (MRI) assessment of pseudocapsule integrity (PCI) and postoperative pathological features in clear cell renal cell carcinoma (ccRCC).
methodsA total of 163 ccRCC patients who underwent partial or radical nephrectomy (RN) were retrospectively included in this study, with preoperative MRI performed to evaluate PCI. Clinicopathological characteristics were compared between the high- and low-PCI groups, and multivariable logistic regression was used to determine predictors of pathological features and surgical selection.
resultsOf the 163 patients, 132 (81.0%) had high PCI and 31 (19.0%) had low PCI, with favorable interobserver agreement (ICC = 0.802). The High PCI group had significantly larger tumor diameters, higher R.E.N.A.L. scores, higher proportion of RN, higher pathological T stages, and higher tumor grades and a higher rate of postoperative pathological upstaging (all P < 0.05). On multivariable logistic regression analyses, higher PCI was an independent protective factor against high pathological T stage (OR = 0.14, 95% CI: 0.02-0.99, P = 0.048), renal sinus or perinephric fat invasion (OR = 0.10, 95% CI: 0.01-0.89, P = 0.039), and RN selection (OR = 0.15, 95% CI: 0.03-0.65, P = 0.012).
conclusionMRI-assessed PCI is significantly correlated with pathological features in ccRCC, serving as a potential tool for preoperative risk stratification. Lower PCI suggests an increased risk of adverse pathological outcomes, whereas higher PCI correlates with less aggressive tumor phenotypes and a lower likelihood of RN.
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