Abstract
Purpose
To develop a nomogram based on preoperative clinical and magnetic resonance imaging (MRI) features for the microvascular invasion (MVI) status in solitary intrahepatic mass-forming cholangiocarcinoma (sIMCC) and to evaluate whether it could predict recurrence-free survival (RFS).
Methods
We included 115 cases who experienced MRI examinations for sIMCC with R0 resection. The preoperative clinical and MRI features were extracted. Independent predictors related to MVI+ were evaluated by stepwise multivariate logistic regression, and a nomogram was constructed. A receiver operating characteristic (ROC) curve was used to assess the predictive ability. All patients were classified into high- and low-risk groups of MVI. Then, the correlations of the nomogram with RFS in patents with sIMCC were analyzed by Kaplan–Meier method.
Results
The occurrence rate of MVI+ was 38.3% (44/115). The preoperative independent predictors of MVI+ were carbohydrate antigen 19-9 > 37 U/ml, tumor size > 5 cm, and an ill-defined tumor boundary. Integrating these predictors, the nomogram exerted a favorable diagnostic performance with areas under the ROC curve of 0.767 (95% confidence interval [CI] 0.654–0.881) in the development cohort, and 0.760 (95% CI 0.591–0.929) in the validation cohort. In the RFS analysis, significant differences were observed between the high- and low-risk MVI groups (6-month RFS rates: 64.5% vs. 78.8% and 46.7% vs. 82.4% in the development and validation cohorts, respectively) (P < 0.05).
Conclusions
A nomogram based on clinical and MRI features is a potential biomarker of MVI and may be a potent method to classify the risk of recurrence in patients with sIMCC.
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Data availability
Data generated or analyzed during the study are available from the corresponding authors by request.
Abbreviations
- CA 19-9:
-
Carbohydrate antigen 19-9
- CI:
-
Confidence interval
- iCCA:
-
Intrahepatic cholangiocarcinoma
- sIMCC:
-
Solitary intrahepatic mass-forming cholangiocarcinoma
- MRI:
-
Magnetic resonance imaging
- MVI:
-
Microvascular invasion
- OR:
-
Odds ratio
- RFS:
-
Recurrence-free survival
- ROC:
-
Receiver operating characteristic
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SC contributed toward data curation, writing—original draft, and methodology. LW contributed toward data curation, formal analysis, and investigation. RZ contributed toward data curation and methodology. WP contributed toward resources and supervision. XL contributed toward resources and supervision. LL contributed toward conceptualization, formal analysis, investigation, project administration, and writing—review and editing. HZ contributed toward conceptualization, formal analysis, investigation, project administration, and writing—review and editing.
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Chen, S., Wan, L., Zhao, R. et al. Nomogram based on preoperative clinical and MRI features to estimate the microvascular invasion status and the prognosis of solitary intrahepatic mass-forming cholangiocarcinoma. Abdom Radiol 49, 425–436 (2024). https://doi.org/10.1007/s00261-023-04079-6
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DOI: https://doi.org/10.1007/s00261-023-04079-6