Blastoma in Dogs

by Slone Wayking Google
    Yearly examinations help detect many forms of blastoma.

    Yearly examinations help detect many forms of blastoma.

    Dean Golja/Digital Vision/Getty Images

    Whether animal or human, when it comes to cancer, early detection is key. For the caring pet owner, finding a lump or growth on your dog is cause for immediate concern. For a veterinarian, any abnormal lump or bump is medically considered a tumor, whether malignant or benign. A good veterinarian is just as concerned as you.

    Blastoma Defined

    Different forms of cancer or tumors have different names. Blastoma is the general name for a particular type of tumor that is thought to arise from embryotic tissue. Most, but not all, are cancerous. The word blastoma is a term that is used in conjunction with a prefix that identifies a location of this particular type of tumor. For example, medulloblastoma is a brain tumor. Retinoblastoma is a tumor of the retina of the eye. In dogs, just like humans, these tumors can develop anywhere in the body, including liver, kidney, bone or nervous system. They have different prefixes, but end in “blastoma.”

    Benign versus Malignant

    Throughout a dog’s body, cells die and regrow countlessly throughout his lifetime. Healthy cells reduplicate in an ordered pattern, and leave exact clones of themselves behind. Malignant cells are mutated cells that grow at an extraordinary rate destroying the healthy tissue in its path. These cells can metastasize to establish colonies in other areas of the body, and these are life-threatening. Benign tumors are typically slow growing and do not invade neighboring tissue. For ones that are benign, surgical removal of the entire tumor is often corrective.

    Visible Signs

    Hepatoblastoma are tumors of the liver. Nephroblastoma are tumors of the kidney. Blastomas have many homes. One in particular, like other forms of cancer is the easiest to notice. Trichoblastoma are skin tumors, and they are usually benign. Although they were once categorized as basal cell tumors, they have since been reclassified. They usually arise in areas of hair loss or hyperpigmentation, and certain breeds are predisposed to them. Veterinarians typically recommend they be surgically removed, so they can be distinguished from mass cell tumors or melanomas.

    When It's Invisible

    Most tumors in dogs are spotted during physical examination, whether by a veterinarian or an observant owner. Testicular, mammary or lymph node tumors are usually discovered with palpation. Bone tumors produce significant limping, and tumors of the spinal cord or brain present neurologically. However, unlike skin growths, lumps beneath the skin or prominent symptoms, the effects of internal types of blastoma or other cancers are harder to spot. Tumors of the liver, spleen or intestinal tract are often advanced before suspected or diagnosed. Radiographs or ultrasound play a key role in their early detection.

    Photo Credits

    • Dean Golja/Digital Vision/Getty Images

    About the Author

    Slone Wayking worked as a professional in the veterinary field for 20 years. Though her interest in animal health led to this path, Wayking initially studied creative arts. She has been article writing for more than a year and is currently working towards her degree in multimedia. Her certifications include business writing and basic web design.

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