Atheroma (Wen) in Dogs
- Synonyms: Sebaceous retention cyst
- Occurrence: common
- Location of disease: Skin/Fur
When to visit the vet?
Home care monitor at home and contact your vet if worse
If the condition worsens / symptoms persist, consult a veterinarian.
The most important facts at a glance
An atheroma, also known as a sebaceous cyst, is a benign cyst that typically forms in the skin or subcutaneous tissue of a dog. This cyst consists of a capsule filled with a pasty, white or yellowish substance containing sebum. Atheromas arise from the blockage of sebaceous glands or hair follicles, caused by dead skin cells, hair follicles, or sebum itself. Genetic factors can promote the formation of atheromas, especially in certain dog breeds such as Cocker Spaniels and Basset Hounds. Hormonal changes and environmental factors such as poor hygiene can also play a role. Symptoms are usually hemispherical skin elevations that are firm-elastic and movable. The diagnosis is made through a physical examination and possibly a fine-needle aspiration. Treatment depends on the cyst size and condition, with small cysts often only requiring observation. Larger or infected cysts are surgically removed. The prognosis is generally very good, as atheromas are benign. Preventive measures include good skin care and a balanced diet. Research focuses on genetic, nutritional, and environmental factors, as well as the development of less invasive treatment methods. Overall, the quality of life for affected dogs is hardly restricted, as long as the cysts are adequately treated.
Causes
An atheroma typically forms in the skin or subcutaneous tissue of a dog. It is a closed capsule filled with a pasty, white or yellowish substance containing sebum. Sebum is an oily secretion produced by the sebaceous glands to keep the skin and coat supple.
The scientific basis for the formation of atheromas lies in the blockage of sebaceous glands or hair follicles. This blockage can be caused by dead skin cells, hair follicles, or sebum itself. An atheroma is a retention cyst, where the natural drainage of sebum is blocked, leading to the accumulation of material within the cyst.
The causes of atheroma formation are diverse. Genetic factors can play a role, as certain dog breeds show a higher predisposition to the formation of cysts. These include, for example, Cocker Spaniels and Basset Hounds. Environmental factors such as poor hygiene or frequent skin irritations can also contribute to the formation of atheromas.
Hormonal changes, especially in unneutered dogs, can influence sebum production and thereby increase the risk of atheroma formation. Furthermore, an infection or inflammation of the sebaceous glands can block the drainage of sebum and lead to the formation of cysts.
Symptoms
The symptoms of an atheroma in dogs are usually easy to recognize. The cysts are typically palpable as small, round lumps under the skin. They are generally not painful and can develop over a longer period.
Affected dogs often show no signs of discomfort as long as the cyst is not infected or inflamed. In some cases, the skin over the cyst may appear red or irritated, especially if the dog tries to lick or scratch the affected area.
If an atheroma becomes infected, it can lead to Swelling, redness, and Pain. In such cases, inflammation or even a rupture of the cyst can occur, requiring veterinary treatment.
Key sign: slow-growing, predominantly painless, easily movable skin lump with a possible central opening and “cheesy” content.
Diagnosis
The diagnosis of an atheroma in dogs is usually made through a thorough physical examination by a veterinarian. The veterinarian will examine and palpate the affected area to determine the nature of the cyst.
In some cases, a fine-needle aspiration may be performed to take a sample of the cyst’s contents. This sample is examined under a microscope to confirm the diagnosis and rule out other possible conditions, such as Tumors or Abscesses.
Additional diagnostic tests, such as X-rays or ultrasound examinations, may be necessary if there is suspicion of deeper tissue involvement or if the veterinarian suspects other underlying problems.
Therapy
The treatment of an atheroma in dogs depends on the size, location, and condition of the cyst. In many cases, especially if the cyst is small and not infected, observation may be sufficient, as atheromas often cause no discomfort.
If the cyst is large or infected, or if it bothers the dog, surgical removal may be necessary. This procedure is usually performed under general anesthesia, and the entire cyst is removed to prevent recurrence.
After the removal of an atheroma, antibiotic treatment may be necessary if an infection is present. The veterinarian may also prescribe Pain medication to support postoperative recovery.
In some cases, the veterinarian may recommend regulating the dog’s sebaceous gland function with special shampoos or diets to reduce the risk of relapses or new atheromas.
Prognosis and follow-up care
The prognosis for dogs with atheromas is generally very good. Since these are benign cysts, there is no risk of malignant degeneration. After surgical removal, the risk of recurrence at the same site is very low, provided the cyst was completely removed.
However, in dogs prone to atheroma formation, new cysts may appear in other locations. Regular monitoring and early treatment can help prevent complications.
Complications are rare but occur if the cyst becomes infected or could not be completely removed during surgery. Overall, the quality of life for affected dogs is hardly restricted, as long as the cysts are adequately treated.
Prevention
The prevention of atheromas in dogs can be supported by good skin care and regular grooming. Regular brushing and bathing of the dog can help remove dead skin cells and excess sebum, which can lead to the blockage of sebaceous glands.
A balanced diet, specifically tailored to the needs of the dog, can also help promote skin health and regulate sebum production. The veterinarian may recommend supplements containing omega-3 and omega-6 fatty acids to support skin and coat health.
For dogs that are genetically predisposed, regular examination by a veterinarian can help detect and treat atheromas early. Early intervention can help avoid complications and reduce the need for surgical procedures.
In some cases, the castration / neutering of a dog can help influence hormonal factors that may contribute to atheroma formation. However, this should be discussed individually with the veterinarian to make the best decision for the respective dog.
Outlook on current research
Current research on atheromas in dogs is still in its early stages, as it is a relatively common but mostly benign condition. An atheroma, often also referred to as a sebaceous cyst, is a benign cyst that forms under the skin of dogs. It consists of a capsule filled with a pasty mass of dead skin cells, oil, and keratin. Researchers are currently focusing on better understanding the exact mechanisms of formation of these cysts to develop preventive measures and identify the best possible treatment methods.
One area of current research investigates genetic factors that may contribute to the formation of atheromas. Some studies suggest that certain breeds are more susceptible to developing these cysts, indicating a genetic predisposition. Researchers are analyzing genetic markers to determine if specific genes can be linked to a higher probability of atheroma occurrence. These investigations could ultimately lead to the development of targeted breeding programs to reduce the risk of atheromas in affected breeds.
Another field of research is dedicated to investigating the role of nutrition and environmental factors in the development of atheromas. Scientists are exploring whether certain diets rich in healthy fats and nutrients can reduce the risk of cyst formation. In parallel, it is being investigated whether environmental factors such as skin care products or environmental pollution play a role in the development of these cysts. These findings could lead to new recommendations for the care and nutrition of dogs to reduce the risk of atheromas.
Regarding the treatment of atheromas, research is currently underway to develop less invasive procedures. Traditionally, atheromas are surgically removed, which can be stressful for the dog and requires a recovery period. New approaches focus on the development of minimally invasive techniques that allow cysts to be treated with less risk and discomfort for the dog. These include laser therapy and ultrasound-guided aspiration techniques, which aim to reduce or completely remove the atheroma without requiring a surgical incision.
In summary, research into atheromas in dogs is on a promising path to improve both the prevention and treatment of these benign Skin lesions. By better understanding the genetic, nutritional, and environmental factors that contribute to atheroma formation, scientists hope to improve the quality of life for dogs and reduce the incidence of this condition.