Is it possible for differentiated endometrioid adenocarcinoma to be cured?

Yes: endometrial cancer which begins in the endometrial mucosa, before invading myometrium or muscle of uterus is virtually 100% cureable. Even if D&C shows tumor cells spreading to blood stream this is not metastasis but cells pushed by curettage into the blood. Even early muscle invasion followed by hysterectomy with node diss. can be cured.