Here are the answers to your specific question, not in order:
tumors are very common. They are tumors that arise from a smooth muscle
cell that make up the wall of the uterus. They are usually associated with heavy, painful periods. They do not go away. They can sit quietly, and also grow for no reason.
2. The "shadow" on her ovary is likely nothing. Assuming that she is young (i.e. less than 50), then there is extremely little concern about ovarian cancer
. The possibilities include: a collapsed cyst
, an ovarian fibroma
, or an artifact of imaging related to surrounding structures.
I hope this helps you while you wait for answer. Do not worry too much, I am sure that it will all go well!