Originally Posted by Athletics005

“Something like this is very rare,” the New Jersey-based veterinarian Dr. Allan Wise said. “I don’t think I’ve ever seen a case of lymphoma in a horse that age. Usually, it would involve an older horse, like an old broodmare. I never heard of it in a fairly young, athletic horse. There are some theories that a horse can get this when something goes wrong with the immune system, but we don’t know what or why. That’s why it is usually the very old that get this; their immune systems are too old.”