Mesenchymal Proliferation in Dogs

by Alisia Compton Google
    Your veterinarian will perform a physical exam to determine if any tumors are present on your dog's body.

    Your veterinarian will perform a physical exam to determine if any tumors are present on your dog's body.

    Dean Golja/Digital Vision/Getty Images

    Mesenchymal tissue is made up of loosely associated cells, which means this type of tissue can migrate easily. Because of its lack of polarity, mesenchymal tissue can form tumors and spread rapidly. Only a veterinarian can determine if a tumor is malignant or benign. It’s essential to have your veterinarian examine your dog whenever you find an unusual growth on his body.

    Five Types of Mesenchymal Proliferation Tumors

    Proliferation is defined as the act of increasing rapidly, and the types of mesenchymal tumors that proliferate can do just that. Lipomas, fibroma, fibrosarcoma, dermal hemangiosarcoma, and subcutaneous hemangiosarcomas are all canine mesenchymal tumors that can proliferate.

    Lipomas Are Common Tumors

    Lipomas are common soft and fatty growths that can proliferate in many areas of a dog’s body. Oftentimes, these growths are nothing to worry about, but you should contact your veterinarian so he can determine the growth is, in fact, lipoma. If you allowed lipoma to go unchecked by a veterinarian, you could be putting your dog in grave danger, as the tumor could be a malignant cancer. If your veterinarian determines your dog has a lipoma growth, he’ll likely document it and ask that you report any future changes in its size or location.

    Fibroma Tumors Are Small and Benign

    Fibroma is the name given to encapsulated benign tumors. These tumors occur when fibrocytes and collagen proliferate. Typically, fibromas will form on your dog’s skin, but can also form anywhere connective tissue exists. Fibroma tumors may be difficult to detect, as these mesenchymal tumors are generally small and will require a microscopic exam to determine whether they're fibromas or something else. Older female boxers are especially prone to fibroma, as are Boston terriers, Doberman pinschers, golden retrievers and fox terriers.

    Malignant Fibrosarcoma Can Be Life Threatening

    Fibrosarcoma tumors are cancerous, and they proliferate aggressively, even after treatment. The malignant tumors are often found in middle-age to senior dogs, around the limbs. Early detection is essential, especially if your dog is under a year old. If you suspect your dog has a fibrosarcoma tumor, or any tumor, get him to the veterinarian right away. Your veterinarian will perform a physical exam, as well as blood work, to determine if your dog is suffering this aggressive cancer.

    Malignant Dermal and Subcutaneous Hemangiosarcomas May Require Chemo

    About a third of hemangiosarcomas will proliferate, so it’s important that signs of these malignant tumors are treated quickly. Sun exposure is the leading cause of dermal hemangiosarcoma, which can be identified by small red or black growths on your dog’s skin. Subcutaneous hemangiosarcomas are red blood growths located under the skin. Both hemangiosarcomas usually occur in large breeds from middle age to senior age. If your veterinarian determines that your dog is suffering from hemangiosarcoma tumors, he may prescribe chemotherapy, surgery or both.

    Photo Credits

    • Dean Golja/Digital Vision/Getty Images

    About the Author

    Alisia Compton is a pet care writer from Western NY. She has experience training dogs, raising cats and riding horses. Her love of animals transfers to her writing, where she educates others about the special care animals sometimes need.

    Trending Dog Behavior Articles

    Have a question? Get an answer from a Vet now!