Elemene Liposomes in Endometrial Cancer

Inclusion Criteria: * Histopathologically confirmed endometrial malignancy via surgery or biopsy, including endometrioid carcinoma, serous adenocarcinoma, clear cell carcinoma, mixed epithelial carcinoma, dedifferentiated/undifferentiated carcinoma, carcinosarcoma, etc. Non-epithelial tumors such as mesenchymal tumors, neuroectodermal tumors and germ cell tumors are excluded. * Treatment-naïve patients with FIGO 2009 stage III-IV disease, or patients with clinically diagnosed recurrent endometrial malignancy (no restriction on the number of recurrences, and no restriction on whether reoperation was performed after recurrence). Patients must not have received chemotherapy, anti-tumor immunotherapy or radiotherapy within 6 months before randomization. * Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1 within 7 days prior to randomization. * Adequate organ function defined as: white blood cell count ≥3.5×10⁹/L, absolute neutrophil count ≥1.5×10⁹/L, platelet count ≥80×10⁹/L, serum total bilirubin ≤1.5×upper limit of normal (ULN), transaminases (alanine aminotransferase, aspartate aminotransferase) ≤1.5×ULN, serum creatinine and blood urea nitrogen ≤1.5×ULN OR calculated creatinine clearance ≥30 mL/min. All laboratory tests shall be performed within 7 days prior to randomization. Left ventricular ejection fraction ≥lower limit of normal (50%) as assessed by Doppler echocardiography. * Negative serum or urine pregnancy test within 7 days before enrollment, and non-lactating status. Exclusion Criteria: * History of other primary malignant tumors within 3 years prior to randomization. * Concurrent participation in another clinical study, except for observational, non-interventional clinical studies. * Uncontrolled concomitant diseases, including but not limited to cardiac disorders, cerebral diseases, hematological diseases, congenital or postoperative hepatic/renal abnormalities; drug and/or alcohol abuse. * Severe postoperative complications that have not fully resolved. * Known allergy or contraindications to the study drugs (Elemene Liposomes Injection, Elemene Emulsion Oral Solution).