Hi stranger! Signing up for MypetMD is easy, free and puts the most relevant content at your fingertips.

Get Instant Access To

  • 24/7 alerts for pet-related recalls

  • Your own library of articles, blogs, and favorite pet names

  • Tools designed to keep your pets happy and healthy


or Connect with Facebook

By joining petMD, you agree to the Privacy Policy.

PetMD Seal

Mouth Cancer (Adenocarcinoma) in Dogs

Salivary Gland Adenocarcinoma in Dogs

 

The salivary glands produce and secrete saliva to help in lubrication and improve the solubility of food, an essential component of the digestive process. There are four major salivary glands, including the mandibular, sublingual, parotid, and zygomatic gland. Adenocarcinoma can affect any of these salivary glands, but the most commonly affected gland in dogs is the mandibular gland.

 

Adenocarcinoma is characterized as originating in the glandular tissue, and like other carcinomas, can be especially malignant, spreading quickly throughout the body. This is generally a locally invasive tumor, but it can also metastasize and invade other distant parts and organs of the body. Like other adenocarcinomas, salivary gland adenocarcinoma is usually found in older animals, around 10-12 years of age.

 

Symptoms and Types

 

Symptoms of adenocarcinoma of the salivary glands depends upon the type of salivary gland that is affected. Following are a few of the common symptoms related to salivary gland adenocarcinoma:

 

  • Painless swelling of upper neck, ear base, or upper lip
  • Halitosis (foul breath)
  • Drooling
  • Weight loss
  • Poor appetite
  • Dysphagia (difficulty in swallowing)
  • Exophthalmos (bulging of eye)
  • Sneezing
  • Dysphonia (hoarseness)

 

Causes

 

The exact cause is still unknown.

 

Diagnosis

 

Your veterinarian will perform a thorough physical exam on your pet, taking into account the background history of symptoms. Blood tests, biochemical profiles and urinalysis will be performed, though results will often return as normal with this disease. Radiographs of affected areas and bones can reveal important information about the nature and extent of the problem. X-rays of other regions may also be performed to see if the tumor has metastasized into these regions of the body, and more refined procedures, like tissue biopsy, will help in establishing a confirmatory diagnosis.

 

 

Treatment

 

Unfortunately, there is no definitive treatment available for adenocarcinoma of the salivary glands in dogs. Surgery to excise and remove the tumor along with some adjacent normal tissue is often recommended. After surgery your dog may be recommended for radiotherapy to achieve local control and long-term survival. No chemotherapeutic agent has yet been recommended for salivary gland adenocarcinoma. Multiple surgeries may be required along with the subsequent radiotherapy sessions.

 

Living and Management

 

Patients that have undergone surgery may need to be taken for veterinary evaluations every three months. Surgery combined with radiotherapy can improve survival time for up to several months in dogs. You can improve the quality of life for your dog during this period by keeping stress at a minimum and making keeping your dog as comfortable as possible to minimize pain and other associated complications. Your dog will need special attention in proper nutrition and pain control. Your veterinarian will guide you in planning for meals and in choosing the best remedies for pain management.

 

 

Related Articles

Leukemia (Acute) in Dogs
Acute lymphoblastic leukemia is a disease in which cancerous lymphoblasts (cells...
READ MORE
Stomach and Intestinal Cancer (Leiomyosarcoma...
Leiomyosarcoma is an uncommon cancerous tumor, which, in this case, arises from the...
READ MORE
Nose and Sinus cancer (Squamous Cell ...
Squamous cell carcinomas are the second most common type of nasal tumor that dogs...
READ MORE
  • Lifetime Credits:
  • Today's Credits:
Hurry Before All Seats are Taken!
Enroll
Be an A++ Pet Parent! Take fun & free courses to earn badges & certifications. Choose a course»
Search dog Articles

 

Latest In Dog Nutrition

What Are Lean Proteins and How They Can Help ...
Protein is an important component in your pet's food, but not all proteins are the...
READ MORE
Pet Food Ingredients that Promote Longer Life
Pet foods, in order to promote a healthy long life, must be balanced and complete...
READ MORE
Five Life-Lengthening Health Tips for Your ...
Anyone who has ever had a dog or cat wishes just one thing — that he or she has a...
READ MORE
Around the Web
MORE FROM PETMD.COM