Ovarian tumor

Two months ago my local vet gave my mare an exam to determine if she had become pregnant from an unplanned breeding three weeks earlier. He said, yes she was pregnant, 9 to 10 months pregnant, and I should have a foal in about a month. (Needless to say I was suprised.)Two months ago my local vet gave my mare an exam to determine if she had become pregnant from an unplanned breeding three weeks earlier. He said, yes she was pregnant, 9 to 10 months pregnant, and I should have a foal in about a month. (Needless to say I was suprised.)

Story originally posted by: Michael Lowder, DVM, MS

Dr. Lowder,

Two months ago my local vet gave my mare an exam to determine if she had become pregnant from an unplanned breeding three weeks earlier. He said, yes she was pregnant, 9 to 10 months pregnant, and I should have a foal in about a month. (Needless to say I was suprised.)

Well it’s been two months and still no foal, no obvious bagging up, although I was able to milk a small amount of clear liquid from her teats. A vet from out of town was at the barn a few days ago, and I told him her history and asked him to exam her.

He said she was NOT pregnant but had a mass associated with the stalk of her right ovary the size of a basketball that probrably weighed close to 30 pounds. He said this is an unusual condition, very firm/mineralized. The size and firmness of this mass is different. Most likely this is not an immediately life threatening condition. However, due to the size and its location, considering a second surgical opinion and the possibility of removing this mass should be strongly considered.

This would not be an easy surgery.

I know you can’t give me an opinion, but what do you think my next course of action should be?

Thanks so much!
Cherry

Cherry,

Ask your vet to refer you to a referral center and have a theriogenologist examine the mare. If it is found to be a tumor then it will most likely have to be removed. What type of behavior signs did your mare have?

Thanks,
Dr. Lowder