• Sang Il Kim, Dong Choon Park, Sung Jong Lee, Min Jong Song, Chan Joo Kim, Hae Nam Lee, and Joo Hee Yoon.
• Department of Obstetrics and Gynecology, St. Vincent's hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
• Int J Med Sci. 2021 Jan 1; 18 (10): 2204-2208.

AbstractObjective: Compare the oncologic outcomes of patients with intermediate-risk endometrial cancer who were staged by minimally invasive surgery with the outcomes of patients who underwent open surgery. Methods: Data from 206 patients with intermediate-risk endometrial cancer who were treated between January 2009 and January 2019 were reviewed. The patients' data were retrieved from five institutions. The patients were divided into two groups: those who underwent open surgery and those who underwent minimally invasive surgery. Tumor characteristics, recurrence rate, disease-free survival, and overall survival were compared according to surgical approach. Results: Among the 206 patients included in this study, 76 underwent open surgery (36.9%) and 130 underwent MIS (63.1%). In patients with stage IB endometrial cancer, the recurrence rate, disease-free survival, and overall survival were not significantly different between those who underwent minimally invasive surgery and those who underwent open surgery. However, in patients with stage II endometrial cancer, the recurrence rate was significantly higher among those who underwent minimally invasive surgery (37.5% vs. 5.3%, p = 0.013). Patients with stage II endometrial cancer who underwent minimally invasive surgery had a significantly lower disease-free survival (p = 0.012) than those who underwent open surgery, however, the overall survival (p = 0.252) was similar between the two groups. Conclusion: Minimally invasive surgery results in less favorable survival outcomes than open surgery in patients with stage II endometrial cancer.© The author(s).

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