Purpose: The aim of this study was to evaluate the clinicaland pathological characteristics of mixed endometrialcarcinoma (MEC).Materials and Methods: The clinical and pathologicalrecords of the 29 MEC patients, who were operated onand regularly followed up in the clinic between January2000 and December 2019, were reviewed. Clinicpathologic features and survival in the MEC group (n=29)were compared to pure serous (n=42) and pure clear celladenocarcinomas (n=13). Clinical features, operationcharacteristics, pathological findings, myometrial invasiondegree (MI), lymph node involvement (LNI),lymphovascular space invasion (LVSI), adjuvant therapies,and follow-up data of the patients and their effects onsurvival were investigated.Results: Eighteen of the cases had endometrioid + serous,7 had endometrioid + clear, 3 had endometrioid + serous,and 1 had clear + serous histopathology. Laparoscopicsurgery was performed in 8 of the cases (27.6%) in themixed group. Stage, the rate of LVSI, LNI, MI ≥50%, andomental metastasis were similar among the groups. Therewere no significant differences in the rates of receivingadjuvant therapy among the groups. Overall survive (OS)was similar among the groups.Conclusion: MECs are tumors that can be difficult todiagnose and manage. There was no difference betweenMEC and pure serous carcinoma (SC) and pure clear cellcarcinoma (CC) in terms of clinicopathological featuresand prognosis. In addition to histopathological features,revealing and evaluating their molecular properties willhelp us to better understand this group of tumors.