Hi, Thanks for writing in to us. Endomentrial adenocarcinoma is a cancer of the inner lining of the uterus. This is treated by surgery in the initial stages. Some patients also require chemotherapy and radiation therapy for proper cure to take place. As you had surgery done and lymph nodes were negative therefore it is possible that the cancer was still localized to the uterus; however in some patients the biopsy of the specimen might show severe grade malignancy cells and this needs to be eradicated with chemotherapy and radiation. If you do not take chemotherapy and radiation then it is always possible that the disease spread might occur to other adjacent structures and then there will be metastasis even in the absence of primary tumor. Cancer must be treated sufficiently so that it does not return. Please do not worry.