A New Model to Improve the Prediction of Prognosis of Endometrial Carcinoma by Combining Traditional Classification With the Presence of Tumor-infiltrating Lymphocytes

Background/aim: We aimed to predict the prognosis of endometrial carcinoma by combining traditional histological classification with the status of tumor-infiltrating lymphocytes (TILs).

Patients and methods: All patients with endometrial carcinoma, treated at our hospital, were classified into four categories-Category I: Type I positive for TILs; category II: type I negative for TILs; category III: type II positive for TILs; and category IV: type II negative for TILs. Prognoses were compared across all the categories. Positivity for TILs was defined as a continuously formed thick zone of TILs at the invasive front.

Results: Multivariate analyses of progression-free and overall survival indicated that category classification was an independent prognostic factor, with hazard ratios of 3.127, 3.483, and 8.459 for progression-free survival, and 3.444, 4.374, and 11.058 for OS for patients in categories II, III, and IV, respectively.

Conclusion: Combining traditional histological classification with TIL status might better predict prognosis of endometrial carcinoma.