Pet Health Information

 

Search Net Vet

Many articles written by our team of veterinary experts

 

CatsCat Health Information

 

Dogs

Dog Health Information

 

Other Small

Small Animal Health Information

 

Exotics

Exotic Animal Health

 

Horses

Equine Health Information

 

Farm

Farm Animal Health Information

 

Tumour behaviour in Dogs

Prevalence of cancer, which means number of diagnosed cancer cases per year, is increasing through years for a variety of reasons, but mostly because of animals living to increasingly older ages and the availability of better health care treatments. Cancer diseases stay the major cause of pet animal death. One of the big difficulties with animal cancer is that the pet cannot tell when he feels something wrong is happening, thus the owners need to bring every change to the attention of their veterinarian. Recognition of tumour related symptoms can facilitate early tumour diagnosis and treatment.                                      

                                                         

Definition of a tumour

A tumour is an abnormal growth of cells on or within the body and may be benign (slow growing, without spreading throughout the body) or malignant (aggressive, with a tendency to metastasise). Cancer can affect any area of the body or any body system. A cellular diagnosis based on a biopsy or a fine needle aspiration of the tumoral cells is required to determine the type of cancer. Each tumour type within a location has a different behaviour, treatment and prognosis.

 

Clinical signs directly due to cancer

The warning signs of cancer in dogs are very similar to that in people, because they share the same types of tumour. Some common type of cancer in dogs include skin tumour, mammary gland tumour, testicular tumour, bone tumour, lymphoma... In many instances malignant tumours arising in the organs of the body will cause symptoms directly related to the location of the tumour.

Such symptoms are alarming when they become chronic and may include:

 

 

 

 

 

 

 

 

 

Canine paraneoplastic syndrome

Paraneoplastic syndrome is a symptom or a group of symptoms that are non-specific and consequence of the presence of a tumour in the body. Those disorders are indirect and are usually caused by tumour cell secretions, that is to say small molecules released in the circulation. Thus they may be seen at sites distant from the location of the tumour.

 

The paraneoplastic syndrome parallels the underlying tumour, and, therefore, successful treatment of the cancer leads to disappearance of those symptoms. Sometimes the symptoms of this syndrome show before the diagnosis of the tumour, and the recognition of them might be helpful for an early tumour diagnosis. Such disorders include loss of appetite, lethargy, weight loss/ poor body condition, fever, increased water intake (more than 100 mL/kg/day) and urination.

 

Some endocrinologic manifestations may also be related to cancer. For example, hypercalcaemia, which clinical manifestations are vomiting and increased water intake, is commonly related to lymphoma or anal tumour. Hypoglycaemia might also be associated to cancer, mostly secondary to a pancreatic tumour. Its clinical expression include weakness, disorientation and seizures.

 

It is important to keep in mind that those symptoms are completely non-specific and may be due to another cause than cancer.  Early diagnosis and treatment are key to a favourable prognosis, whatever the cause of the symptoms.

 

If you have any questions you would like answered, simply fill in the box below and receive a rapid response from one of the online veterinary surgeons.

JustAnswer.com

 

 

 
 

More Dog Articles...

         
   

Worming

Coccidiosis

Giardiasis

Gnathostoma

Hookworms

Roundworms

Tapeworms

Threadworms

Whipworms

Worming

 

Vaccination

Canine Parvovirus

Canine Hepatitis

Canine Distemper

Kennel Cough

Leptospirosis

Rabies

Vaccinations

 

Coat and Parasites

Demodectic Mange

Fleas on Dogs

Grooming

Sarcoptic Mange

Skin Problems

 

Common Problems

Ear Infections

Eye Problems

Older Dogs

Osteoarthritis

Urinary Tract Infections

 

Digestion

Bloat and Gastric Torsion

Colitis

Poisonous Food

Stomach Upset

 

New Dog

Breeds with Least Health Problems

Breeds with most Health Problems

Short Nosed Dogs

Popular Breeds and Health Issues

 

Neutering

Advantages of Neutering Dogs

Castrating Dogs

Spaying Bitches

 

Cancer

Possible Signs

Prevention

Symptoms

Types of Cancer

Treatment