Abstract
Background
Accurate prediction of the grade of invasive ductal carcinoma (IDC) before treatment is vital for individualized therapy and improving patient outcomes. This study aimed to develop and validate a mammography-based radiomics nomogram that would incorporate the radiomics signature and clinical risk factors in the preoperative prediction of the histological grade of IDC.
Methods
The data of 534 patients from our hospital with pathologically confirmed IDC (374 in the training cohort and 160 in the validation cohort) were retrospectively analyzed. A total of 792 radiomics features were extracted from the patients’ craniocaudal and mediolateral oblique view images. A radiomics signature was generated using the least absolute shrinkage and selection operator method. Multivariate logistic regression was adopted to establish a radiomics nomogram, the utility of which was evaluated using a receiver-operating characteristic curve, calibration curve, and decision curve analysis (DCA).
Results
The radiomics signature was found to have a significant correlation with histological grade (P < 0.01), but the efficacy of the model is limited. The radiomics nomogram, which incorporated the radiomics signature and spicule sign into mammography, showed good consistency and discrimination in both the training cohort [area under the curve (AUC) = 0.75] and the validation cohort (AUC = 0.75). The calibration curves and DCA demonstrated the clinical usefulness of the proposed radiomics nomogram model.
Conclusions
A radiomics nomogram based on the radiomics signature and spicule sign can be used to predict the histological grade of IDC and assist in clinical decision-making for patients with IDC.
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Availability of data and materials
The datasets used and/or analyzed during the current study are available from the corresponding author on reasonable request.
Abbreviations
- IDC:
-
Invasive ductal carcinoma
- MRI:
-
Magnetic resonance imaging
- CC:
-
Craniocaudal
- MLO:
-
Mediolateral oblique
- DICOM:
-
Digital imaging and communications in medicine
- PACS:
-
Picture Archiving and Communication System
- ROIs:
-
Regions of interest
- RLM:
-
Run–length matrix
- GLSZM:
-
Gray-level size zone matrix
- GLCM:
-
Gray-level cooccurrence matrix
- LASSO:
-
Least absolute shrinkage and selection operator
- AUC:
-
Area under the curve
- ROC:
-
Receiver-operating characteristic
- DCA:
-
Decision curve analysis
- CESM:
-
Contrast enhancement spectral mammography
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XCR collected and interpreted the patient data, and was a major contributor in writing the manuscript.YHK collected the data and wrote the first draft. GFS, ZGL and GY proposed and designed the study. JLR and YHL analyzed the data. All authors read and approved the final manuscript.
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The retrospective study was approved by ethics committee of the Fourth Hospital of Hebei Medical University (no. 2020KY271). As patient consent to review their medical records was not required by the ethics committee, because the study is retrospective and does not involve patient privacy, the signed informed consent requirement was waved. This study was conducted in accordance with the declaration of Helsinki and patients’ data confidentiality.
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Rong, XC., Kang, YH., Shi, GF. et al. The use of mammography-based radiomics nomograms for the preoperative prediction of the histological grade of invasive ductal carcinoma. J Cancer Res Clin Oncol 149, 11635–11645 (2023). https://doi.org/10.1007/s00432-023-05001-9
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DOI: https://doi.org/10.1007/s00432-023-05001-9