Fig. 1From: Can addition of frozen section analysis to preoperative endometrial biopsy and MRI improve identification of high-risk endometrial cancer patients?Flowchart shows study participant inclusion and exclusion. Consecutive patients who underwent surgery for uterine endometrial cancer between January 2013 and September 2016 at this hospital were recruited. Thirty-six patients were excluded due to incomplete preoperative assessment data, including lack of pre-op EB data (n = 9), lack of FS (n = 26), or indeterminate intraoperative staging by frozen section (n = 1). Patients who underwent preoperative hormonal therapy (n = 1) or neoadjuvant chemotherapy (n = 1), or had coexisting cancer of other organs, including uterine cervical cancer and non-endometrioid ovarian cancer (n = 21), were also excluded. FS: frozen section. Pre-op EB: preoperative endometrial biopsyBack to article page