Abstract
Purpose
To predict poor overall survival (OS) and risk of residual tumor after surgery using MR imaging, clinical, and histopathological findings in perihilar cholangiocarcinoma.
Methods
196 patients with perihilar cholangiocarcinoma who underwent preoperative MRI and curative-intent surgery were retrospectively included. MRI findings were assessed by two radiologists. Clinical characteristics and histopathological results such as serum carcinoembryonic antigen (CEA), carbohydrate antigen 19-9 (CA 19-9), T and N stage, and resection status, were also investigated. Cox regression analysis and the Kaplan–Meier method were used to identify prognostic factors for OS. We further analyzed the correlation between MRI features and residual tumors using logistic regression analysis.
Results
The median OS was 25.0 ± 26.6 months. T stage (hazard ratio [HR] 6.26, p = 0.014), N stage (HR 1.86, p = 0.002), CA-19-9 >37 U/mL (HR 2.06, p < 0.001), enlarged LN on MRI (HR 1.69, p = 0.006), and residual tumor (HR 1.52, p = 0.034) were important predictors of poor survival. The 5-year OS of the complete resection group (n = 107) was significantly better than that of the residual tumor group (n = 89) (35.5% vs. 18.8%, p = 0.002). Additionally, peritumoral fat stranding (odds ratio[OR] 2.09, p = 0.027), Bismuth type III/IV (OR 1.95, p = 0.022), and common bile duct (CBD) involvement (OR 2.3, p = 0.008) on MRI were important predictors of residual tumors in univariate analyses. However, absence of peritumoral fat stranding was a significant independent predictor for complete resection (OR 1.99, p = 0.048) and showed the highest sensitivity, at 79.8%.
Conclusion
MR imaging, clinical and histopathological results are useful for predicting poor survival after surgery for perihilar cholangiocarcinoma. Furthermore, MRI findings, including peritumoral fat stranding, CBD involvement, and Bismuth type, are important for the prediction of residual tumors.
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Data availability
We declared that materials described in the manuscript, including all relevant raw data, will be freely available to any scientist wishing to use them for non-commercial purposes, without breaching participant confidentiality.
Code availability
All softwares used during the study appear in the submitted article; No code was generated or used during the study.
Abbreviations
- ALP:
-
Alkaline phosphatase
- ALT:
-
Alanine aminotransferase
- AST:
-
Aspartate aminotransferase
- CA 19-9:
-
Carbohydrate antigen 19-9
- CBD:
-
Common bile duct
- CEA:
-
Carcinoembryonic antigen
- DWI:
-
Diffusion-weighted imaging
- LN:
-
Lymph node
- MDCT:
-
Multidetector computed tomography
- MRCP:
-
Magnetic resonance cholangiopancreatography
- MRI:
-
Magnetic resonance imaging
- OS:
-
Overall survival
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Study conception and design: JHKim; Acquisition of data: JSB, H-JK; Data Analysis: JSB, H-JK; Data interpretation: JY, JHK; Drafting of manuscript: JY; Critical revision of manuscript: JHK.
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This study was approved by Institutional Review Board of Seoul National University Hospital (IRB No. 1807-043-957) and written informed consent was waived. This study was in accordance with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
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Written informed consent was waived by Institutional Review Board of Seoul National University Hospital due to retrospective design of the study.
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Yoo, J., Kim, J.H., Bae, J.S. et al. Prediction of prognosis and resectability using MR imaging, clinical, and histopathological findings in patients with perihilar cholangiocarcinoma. Abdom Radiol 46, 4159–4169 (2021). https://doi.org/10.1007/s00261-021-03101-z
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DOI: https://doi.org/10.1007/s00261-021-03101-z