4.5 Article

Treatment and outcomes in undifferentiated and dedifferentiated endometrial carcinoma

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JOURNAL OF GYNECOLOGIC ONCOLOGY
卷 33, 期 3, 页码 -

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KOREAN SOC GYNECOLOGY ONCOLOGY & COLPOSCOPY
DOI: 10.3802/jgo.2022.33.e25

关键词

Cancer; Neoplasm; Uterus

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This study evaluates the disease characteristics, treatment, and survival outcomes of patients with undifferentiated and dedifferentiated endometrial carcinoma treated at BC Cancer. The results show that patients with stage I/II have good survival outcomes, and adjuvant chemotherapy and radiotherapy can improve disease-free survival. The incidence of abnormal profiles is high in patients who undergo MMR testing.
Objective: Undifferentiated and dedifferentiated endometrial carcinoma is a rare type of uterine malignancy. This study assesses disease characteristics, treatment and survival outcomes in patients with undifferentiated and dedifferentiated endometrial carcinoma treated at BC Cancer. Methods: All patients diagnosed with undifferentiated and dedifferentiated endometrial carcinoma between 2000 and 2019 at BC Cancer were reviewed centrally. Clinical, pathologic, treatment and outcomes were reviewed retrospectively. The Kaplan-Meier method was used to evaluate overall survival (OS) and disease-free survival (DFS). Multivariable analysis was performed using Cox regression analysis. Results: Fifty-two patients were included, 33% had undifferentiated carcinoma and 67% dedifferentiated carcinoma. Sixty-nine percent of those who had mismatch repair (MMR) testing of their tumor had an abnormal profile. The 5-year DFS was 80% (95% confidence interval [CI]=71%-89%) for stage I/II, 29% (95% CI=28%-40%) for stage III and 10% (95% CI 1%-19%) for stage IV. The 5-year OS was 84% (95% CI=75%-92%) for stage I/II, 38% (95% CI=26%-50%) for stage III and 12% (95% CI=1%-24%) for stage IV. Multivariate analysis showed that receiving adjuvant chemotherapy, adjuvant radiotherapy, lower stage and better Eastern Cooperative Group performance status were associated with improved DFS (p<0.05). Conclusion: Patients with stage I/II undifferentiated and dedifferentiated endometrial carcinoma had excellent survival outcomes, those with stage III/IV had worse outcomes, similar to previously reported. Adjuvant chemotherapy and radiotherapy were associated with improved DFS. MMR testing should be performed for these patients due to the high incidence of abnormal profiles.

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