This article is from the WSSF 2017 AFRMA Rat & Mouse Tales news-magazine.
By Carmen Jane Booth, D.V.M.
Jonathan Brice, CO, Facebook
Q I have a female fancy mouse and unfortunately I don’t remember how old she is but she’s got a strange growth on her genital area. I don’t know if it’s something I should be concerned about or not. She is a female because when she was younger and furless I did see nipples. She hasn’t been with a male yet, she acts normal, she doesn’t seem bothered by it, and it doesn’t bleed.
A It’s a tad difficult to see exactly where the mass originates. In the picture it looks like it is coming out of her vulva. It is definitely a tumor, but looks exophytic (growing outward) and probably benign. It doesn’t look angry enough or the correct color and tissue pattern to be a prolapsed uterus, but I can’t be sure from the picture. The surface is pink and a little irritated from scraping on the ground. It looks like the same tissue that lines the vulva/vagina in mice. It would be good to have this checked and removed if she is healthy enough for surgery.