目次
What is Perianal Gland Adenoma?
Perianal gland adenoma is a benign tumor, not cancer. It can grow quite large, but it is treatable. Generally, the prognosis after treatment is good.
This tumor occurs near the anus and its incidence decreases with neutering, indicating a significant influence of male hormones. It predominantly occurs in male dogs and is rare in female dogs.
Malignant forms are called perianal gland carcinoma, which are difficult to cure. Since it’s hard to distinguish between benign and malignant forms, early testing is recommended. In the case of perianal gland carcinoma, its occurrence is unrelated to neutering or male hormones.
Where does Perianal Gland Adenoma Appear?
Around a dog’s anus are secretory glands called “perianal glands,” which primarily secrete sebum.
Perianal gland adenoma is a tumor arising from these perianal glands. Most perianal gland adenomas appear as a single mass, but they can also occur at multiple sites.
Causes of Perianal Gland Adenoma
Perianal gland adenoma is associated with male hormones and thus rarely occurs in female dogs.
Even among male dogs, the incidence decreases in neutered individuals. Aging, similar to other tumors, is also a risk factor.
In summary, perianal gland adenoma is more likely to occur in older, unneutered male dogs.
Symptoms of Perianal Gland Adenoma
Since perianal gland adenoma is a benign tumor, it does not metastasize like malignant tumors and is not life-threatening.
However, as a benign tumor, it forms hard nodules in the gland tissue around the anus. If left untreated, the tumor can grow large, potentially causing the skin to ulcerate, leading to bleeding and infection.
If it causes pain during defecation, the dog may become reluctant to defecate.
Therefore, if any abnormal tumor is observed around the dog’s anus, it is recommended to seek a veterinarian’s diagnosis as soon as possible.
Treatment of Perianal Gland Adenoma
Even though it is benign, the tumor may grow and bleed, so surgical removal is common. In cases where the tumor is not large and does not affect daily life, or in elderly dogs who cannot tolerate surgery or anesthesia, surgery might not be recommended.
Post-surgical care is important, as new tumors may recur. Neutering is also performed simultaneously with tumor removal.
- Surgical removal of the tumor.
- If not neutered, neutering to improve prognosis.
- Hormone therapy to suppress the action of male hormones and improve prognosis.
If you find an anal sac apocrine gland carcinoma or an anal gland carcinoma in the perianal region of a dog, the cancer will not stay in place. It is prone to lymph node and lung metastasis, and the prognosis is generally poor.
Since the general public cannot distinguish whether a tumor is malignant or benign, we recommend having a veterinarian examine it as soon as you find a tumor.
Other Measures for Perianal Gland Tumors
Immune Strategies and Hormone Balance Improvement
As mentioned above, perianal gland tumors are more common in older male dogs.
As they age, their immunity declines, and their hormone balance is also easily disrupted.
Therefore, consider revising their diet and providing ingredients that can potentially modulate immunity and improve hormone balance in their daily routine.
Our laboratory is conducting research to determine whether the administration of Cordy can modulate the immune system and have an effect on cancer.
Revising the Diet
Our bodies, as well as our dogs’, are built by our daily diet.
To make it difficult for tumors to grow, it’s essential to create an internal environment where the immune system can function properly. The foundation for this is the daily diet.
No matter how high-quality dog food claims to be, it is, after all, processed food.
Heat processing deactivates enzymes found in fresh raw vegetables, meat, fish, and other ingredients.
Consider adding fresh vegetables or fish as toppings to their daily food, or add lightly boiled raw meat. This can help maintain their immune function, so first, review their daily diet.
By revising the diet, you can slow down the proliferation of cancer, build stamina, and improve conditions like anemia and albumin levels.
Conversely, reducing glucose, which serves as nutrition for growing cancer, is also important.
Reducing the intake of carbohydrates helps in cancer prevention and diabetes prevention.
- Nutritional Therapy for Cancer in Dogs and Cats – Basics of High Protein, Low Carbohydrates
- New Dietary Ideas to Beat Cancer (Dog and Cat Edition)
- Active Vitamin Intake for Cancer Countermeasures in Dogs and Cats
- Low Protein Diet for Cats with Kidney Disease
- BCAA Supplementation for Dogs and Cats with Declining Stamina or Poor Liver/Kidney Function
When using medications such as anti-cancer drugs, steroids, or antibiotics, liver function decline is also a concern.
In such cases, co-administration of domestic SPF pig-derived placenta extract powder may minimize liver damage.
Even in cases where liver values have already worsened, administering domestic SPF pig-derived placenta extract powder has shown examples of liver function improvement within about a month.
Our laboratory continues to research Cordy, which is expected to have immune-modulating effects, and domestic SPF pig-derived placenta extract powder, which is expected to protect liver function. Please feel free to contact us if you have any questions.
Please feel free to contact us if you have any questions.
監修獣医師：林美彩 所属クリニック：chicoどうぶつ診療所
代替療法と西洋医学、両方の動物病院での勤務経験と多数のコルディの臨床経験をもつ。 モノリス在籍時には、一般的な動物医療（西洋医学）だけでは対応が困難な症例に対して多くの相談を受け、免疫の大切さを痛烈に実感する。
ペットたちの健康維持・改善のためには薬に頼った対処療法だけではなく、「普段の生活環境や食事を見直し、自宅でさまざまなケアを取り入れることで免疫力を維持し、病気にならない体づくりを目指していくことが大切である」という考えを提唱し普及活動に従事している。
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