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Article

A Nomogram for Preoperative Prediction of Tumor Aggressiveness and Lymphovascular Space Involvement in Patients with Endometrial Cancer

1
Department of Radiology, Hospital of Bolzano (SABES-ASDAA), Teaching Hospital of Paracelsius Medical University (PMU), 39100 Bolzano-Bozen, Italy
2
Department of Imaging and Radiotherapy, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy
3
Department of Ginecology, Hospital of Bolzano (SABES-ASDAA), Teaching Hospital of Paracelsius Medical University (PMU), 39100 Bolzano-Bozen, Italy
4
Department of Pathology, Hospital of Bolzano (SABES-ASDAA), Teaching Hospital of Paracelsius Medical University (PMU), 39100 Bolzano-Bozen, Italy
5
Department of Health Sciences (DISSAL), University of Genoa, 16126 Genoa, Italy
*
Author to whom correspondence should be addressed.
J. Clin. Med. 2025, 14(11), 3914; https://doi.org/10.3390/jcm14113914
Submission received: 22 April 2025 / Revised: 19 May 2025 / Accepted: 31 May 2025 / Published: 2 June 2025

Abstract

Background/Objectives: To develop a nomogram for predicting tumor aggressiveness and the presence of lymphovascular space involvement (LVSI) in patients with endometrial cancer (EC) using preoperative MRI and pathology–laboratory data. Methods: This IRB-approved, retrospective, multicenter study included 245 patients with histologically confirmed EC who underwent preoperative MRI and surgery at participating institutions between January 2020 and December 2024. Tumor type and grade, both from preoperative biopsy and surgical specimens, as well as preoperative CA125 and HE4 levels, were retrieved from institutional databases. A preoperative MRI was used to assess tumor morphology (polypoid vs. infiltrative), maximum diameter, presence and depth (< or >50%) of myometrial invasion, cervical stromal invasion (yes/no), and minimal tumor-to-serosa distance. The EC-to-uterus volume ratio was also calculated. Results: Among the 245 patients, 27% demonstrated substantial LVSI, and 35% were classified as aggressive on final histopathology. Multivariate analysis identified independent MRI predictors of LVSI, including cervical stromal invasion (OR = 9.06; p = 0.0002), tumor infiltration depth (OR = 2.09; p = 0.0391), and minimal tumor-to-serosa distance (OR = 0.81; p = 0.0028). The LVSI prediction model yielded an AUC of 0.834, with an overall accuracy of 78.4%, specificity of 92.2%, and sensitivity of 43.1%. For tumor aggressiveness prediction, significant predictors included biopsy grade (OR = 8.92; p < 0.0001), histological subtype (OR = 12.02; p = 0.0021), and MRI-detected serosal involvement (OR = 14.39; p = 0.0268). This model achieved an AUC of 0.932, with an accuracy of 87.0%, sensitivity of 79.8%, and specificity of 91.2%. Both models showed excellent calibration (Hosmer–Lemeshow p > 0.86). Conclusions: The integration of MRI-derived morphological and quantitative features with clinical and histopathological data allows for effective preoperative risk stratification in endometrial cancer. The two nomograms developed for predicting LVSI and tumor aggressiveness demonstrated high diagnostic performance and may support individualized surgical planning and decision-making regarding adjuvant therapy. These models are practical, reproducible, and easily applicable in standard clinical settings without the need for radiomics software, representing a step toward more personalized gynecologic oncology.
Keywords: uterus; endometrial neoplasms; lymphovascular space invasion; neoplasm grading; magnetic resonance imaging; nomogram model uterus; endometrial neoplasms; lymphovascular space invasion; neoplasm grading; magnetic resonance imaging; nomogram model

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MDPI and ACS Style

Valletta, R.; Avesani, G.; Vingiani, V.; Proner, B.; Steinkasserer, M.; Notaro, S.; Vanzo, F.; Negri, G.; Vercelli, C.; Bonatti, M. A Nomogram for Preoperative Prediction of Tumor Aggressiveness and Lymphovascular Space Involvement in Patients with Endometrial Cancer. J. Clin. Med. 2025, 14, 3914. https://doi.org/10.3390/jcm14113914

AMA Style

Valletta R, Avesani G, Vingiani V, Proner B, Steinkasserer M, Notaro S, Vanzo F, Negri G, Vercelli C, Bonatti M. A Nomogram for Preoperative Prediction of Tumor Aggressiveness and Lymphovascular Space Involvement in Patients with Endometrial Cancer. Journal of Clinical Medicine. 2025; 14(11):3914. https://doi.org/10.3390/jcm14113914

Chicago/Turabian Style

Valletta, Riccardo, Giacomo Avesani, Vincenzo Vingiani, Bernardo Proner, Martin Steinkasserer, Sara Notaro, Francesca Vanzo, Giovanni Negri, Caterina Vercelli, and Matteo Bonatti. 2025. "A Nomogram for Preoperative Prediction of Tumor Aggressiveness and Lymphovascular Space Involvement in Patients with Endometrial Cancer" Journal of Clinical Medicine 14, no. 11: 3914. https://doi.org/10.3390/jcm14113914

APA Style

Valletta, R., Avesani, G., Vingiani, V., Proner, B., Steinkasserer, M., Notaro, S., Vanzo, F., Negri, G., Vercelli, C., & Bonatti, M. (2025). A Nomogram for Preoperative Prediction of Tumor Aggressiveness and Lymphovascular Space Involvement in Patients with Endometrial Cancer. Journal of Clinical Medicine, 14(11), 3914. https://doi.org/10.3390/jcm14113914

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