Predictive Factor of Tumor Aggressiveness in Patients with Extrahepatic Cholangiocarcinoma Based on Diffusion-weighted MRI
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View abstract on PubMed
Summary
This summary is machine-generated.Diffusion-weighted MRI (DW-MRI) can non-invasively predict lymph node metastasis and differentiation grade in extrahepatic cholangiocarcinoma (EHCC). Lower apparent diffusion coefficient (ADC) values indicate higher likelihood of metastasis and poorer differentiation in EHCC patients.
Area Of Science
- Radiology and Medical Imaging
- Oncology
- Gastroenterology
Background
- Extrahepatic cholangiocarcinoma (EHCC) is a highly malignant neoplasm with a poor prognosis due to late detection.
- Accurate staging and pathological differentiation are crucial for guiding treatment and predicting outcomes in EHCC.
- Current diagnostic methods often lack the precision needed for early and accurate assessment of EHCC.
Purpose Of The Study
- To evaluate the predictive performance of diffusion-weighted magnetic resonance imaging (DW-MRI) in assessing T stages, lymph node metastasis, and pathological differentiation grades in EHCC.
- To determine if DW-MRI parameters can serve as non-invasive biomarkers for EHCC characteristics.
- To correlate MRI findings with pathological diagnoses for improved clinical decision-making.
Main Methods
- Retrospective analysis of DW-MRI scans from 85 pathologically diagnosed EHCC patients before surgery.
- Measurement of tumor apparent diffusion coefficient (ADC) values and maximum tumor area (AMA).
- Statistical analysis including Mann-Whitney U test and receiver operating characteristic (ROC) curve analysis to correlate imaging findings with pathological T and N stages and differentiation grades.
Main Results
- Significantly higher lesion AMA and lower tumor ADC values were observed in node-positive EHCC compared to node-negative cases (P=0.006 and P=0.001, respectively).
- A tumor ADC value <1.249×10<sup>-3</sup> mm<sup>2</sup>/s demonstrated predictive capability for node-positive EHCC with 64.29% sensitivity and 73.68% specificity (AUC=0.725, P=0.001).
- A progressive decrease in EHCC differentiation correlated with a reduction in tumor ADC values (P=0.000).
Conclusions
- Diffusion-weighted MRI is a valuable non-invasive tool for evaluating the N stage (lymph node metastasis) of extrahepatic cholangiocarcinoma.
- DW-MRI can also effectively assess the pathological differentiation grade of EHCC.
- These findings suggest that DW-MRI can aid in the preoperative assessment and management of EHCC patients.
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