My Aunt just had surgery for what they thought was ovarian, but turned out to be fallopian cancer. When they did the hysterectmy they said her lymph nodes were enlarged and they tried to remove them but they were attached to the aorta. This could be what they are referring to if they are enlarged. My Aunt had the surgery, but will now do chemo for the nodes, so there is treatment out there and her doctor is very optimistic about everything.
Hope this helps. Take Care