I agree with the above comment.
Hi, that sounds like a lot of useless info the ultrasound tech gave your mom, that causes more anxiety then anything good and doesn't even sound right. I had a endometrioma which was considered a "tumor" that was all over the outside of the ovary, not within it. A cyst is ususally considered fluid filled and a tumor has solid components, but can have fluid also. Not all "tumors" are cancerous. I think you should call the Gyn tell them you are concerned from what the ultrasonagrapher said and get more info. Hope things turn out well ! 99% of tumors, cysts, are benign. Shannon