Endometrial cancer is a group of epithelial malignant tumors that occur in the endometrium. Clinically, the surgical pathology staging revised by the World Health Organization in 2000 is mainly used, based on the severity of the lesion after surgery. Endometrial cancer can be divided into four stages, where, depending on the size and severity of the lesion, it can further be classified into sub-stages a, b, and c. Stage IA refers to cancer limited to the endometrium and is the earliest stage of endometrial cancer. Stage IA endometrial cancer can be completely cured with surgical treatment.