Because they frequently go away on their own, histiocytomas are thought to be an overgrowth of a specific type of immune system cells that normally help protect the skin from cancer. A perianal adenoma is a common tumor related to the sebaceous oil glands surrounding the anus. These lumps are mostly seen in intact unneutered male dogs, although they have been found in spayed female dogs. A perianal adenoma is often slow growing and non-painful, but may ulcerate and become infected on its surface.
Dogs may have a single tag or many of them on their chest, legs, face, back, armpits or other areas. Skin tags can develop in any breed, although large-breed dogs may be at greater risk. Basically, a sebaceous cyst is a very large pimple that is harmless to your pet and may feel like a raised bump.
If left alone, it might go away without treatment, but may recur. If it bursts, a white, paste-like or cottage-cheese-like material is seen. If located under the skin, an abscess may appear suddenly as a painful swelling that may feel firm or squishy like a water balloon. An abscess associated with the skin may be caused by a bite wound, either from an insect or another animal, or by an infected penetrating injury such as those caused by sticks or grass awns sharp grass seeds.
Your veterinarian will need to evaluate the abscess, drain it, flush the area with a sterile solution and prescribe antibiotics. Hives on dogs, known medically as urticaria, are similar to those on people. Hives may appear as a rash of round, red bumps or as a collection of round or oval, raised bumps on the skin that itch.
The underlying cause is a reaction to an allergen such as a bee sting or contact with a plant. Hives often resolve on their own if the case is mild; however, sometimes your veterinarian will want to administer an antihistamine or steroid to provide relief. Like us, dogs can get warts, too. Warts — or papillomas, in veterinary-speak — are small growths that seem to pop up on the skin suddenly. Dog warts typically have a cauliflower appearance similar to the warts people get, and grow alone or in clusters.
Canine melanoma tumors result from unchecked growth of pigment-carrying cells known as melanocytes. Melanomas of the skin, which are not caused by sunlight, tend to be benign and readily treatable through surgery, while very aggressive melanomas tend to grow around the mouth and on legs.
Because lumps on dogs can be difficult to identify and evaluate at home, owners are encouraged to consult their vet and find out if the lump should be tested and identified. Keeping your pets healthy and happy forever. These are similar to a zit on a human, although these cysts can grow much larger. The injury underneath the hematoma, though, may need to be evaluated by a doctor to make sure there are no broken bones or serious health concerns.
Abscesses — An abscess is caused by an infection, and it should be treated promptly by a vet. For this reason, visit a vet or vet hospital promptly to start treatment as quickly as possible. When a lump has been discovered, your veterinarian will perform a physical examination. If the lump is very new and potentially temporary like the result of a bug bite or an injection , the veterinarian may recommend a period of observation, but in most cases, they will perform additional diagnostics to determine the type of cells that comprise the mass.
This usually means collecting a sample of the material from the mass and analyzing it under a microscope. A veterinarian typically collects these samples via fine needle aspirate or biopsy. Evaluation of the samples often performed by a pathologist can indicate whether the mass is cancerous , and if so, what type of cancer is present. If your veterinarian diagnoses your dog with cancer, additional diagnostics will most likely be recommended, including:. Some advanced diagnostics and treatments must be performed by a veterinary specialist.
If a fine needle aspirate is not effective or if your vet thinks it's not the best option the next recommendation is usually a biopsy. A biopsy is often performed with the dog under general anesthesia or sedation, but local anesthesia may be used instead depending on the size and location of the mass.
The biopsy may be performed by using a special large needle. Or, the vet may cut into the mass surgically. In some cases, the entire mass is removed surgically and sent to a laboratory for identification. Many lumps, bumps, and growths cannot be prevented, but some can. For example, spaying your dog before her first heat cycle virtually eliminates the chances that she will develop mammary tumors. In all cases, maintain a healthy diet and an active lifestyle for your dog and see your veterinarian at least annually for preventative care.
Adhere to a regular grooming schedule and take note of any lumps or bumps that are new. A photo and a written record can help track growth and if you see rapid change, speak to a vet right away.
Tumors of the Skin in Dogs. Merck Veterinary Manual. Oral Tumors in Small Animals. Mammary Tumors in Dogs and Cats. Canine Lymphoma.
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