Presented by Daniel Toriola
Cancer, also called malignancy, is characterized by an abnormal growth of cells. There are more than 100 types
of cancer, including breast cancer, skin cancer, lung cancer, colon cancer, prostate cancer, and lymphoma.
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Equine Cancer
By RON PETRACEK
It is not very often you hear of a horse with cancer. Often when you do it is after the horse has died
and the cancer was later discovered in a necropsy. However, if the cancer is detected early then there
are several things that a veterinarian can do to help your horse fight the cancer.
Horses, like humans are able to develop a number of cancers. They are able to get skin cancer and
lymphatic cancers. They are also able to contract cancers in various organs as well. Like humans,
horses will also develop lumps and tumors. They can also develop skin cancer lesions. These lumps
often occur under the eyes, around the genitals and on the skin. These lumps call for diagnosis via
biopsy to determine the type of cancer as well as the severity.
Cancer is hard to diagnose because the symptoms are so vague. They may present symptoms similar
to other disease or none at all. The main symptom associated with cancer is a horse that doesn’t seem
to be thriving or responding to treatment for other diseases. These horses are often suffering from
some sort of cancer.
Treatment for equine cancer is very similar to human treatments. The horse may undergo surgery to
remove malignant tumors or potentially malignant tumors. They can undergo chemotherapy,
immunotherapy for immune system support and even laser therapy.
Often several of these treatments may be employed at one time. Horses may also undergo radiation
therapy and a process called cryosurgery, which involves freezing off the tumor caused by skin cancer.
Skin cancer is prevalent in light colored horses. Horse