Dog Mammary Tumor Pictures

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Mammary Tumors in Dogs

We have put together a collage of dog mammary tumor pictures for your benefit, later in the article.

Mammary tumors are most prevalent in older, intact dams or bitches (female dogs that have not been spayed as yet) and it is extremely uncommon in male dogs. 

Upon examination a vet might suspect a mammary tumor. It is categorized by finding a mass in the cranial thoracic mammary glands in dogs.

Removal of the dog mammary tumor when it is found to be benign (not dangerous), within the region where the lymph node is situated, might improve the time span that the canine is free from the disease.

Unfortunately if the tumor is malignant (harmful), the dog tumor removal surgery might not always increase the dog’s lifespan. Watch the video below for more insight on this technique.

What do These Mammary Tumors Look Like in Dogs?

The two back canine mamalonation cells are more commonly the culprits as opposed to the three pituitary glands. These canine mammary tumors can manifest as either one node or clusters of many more nodes.

The size of the nodes range between .39 inches and 9.84 inches. It has the shape of a lobule and greyish-brown in color. The cysts will be quite stiff and will be filled with fluid.

Different types of canine mammary cysts may appear on your dog and some might even be made up of various types of osseous matter.

Dog with sutures after surgery
Canine post-mammary gland surgery

How is the Diagnosis Confirmed?

The outcome is then affirmed by means of histopathology. Having definite confirmation of this is required for establishing the correct method of treatment and will also determine the outlook of the canine mammary tumor from a recovery perspective.

Dog Mammary Tumor Picture
Dog Mammary Tumor picture

In the video below you can see some examples of mammary tumors in dogs that were published on our Facebook page.

What Causes Mammary Tumors in Dogs

The genesis of mammary tumors in dogs is unknown. However factors such as hormones play a vital role in the Hormones play an important role in the abnormal growth of mamalonation cells,.

However, the exact point of origin still eludes us today. The hormones Estrogen receptors have been found on the mammary cyst cells on dogs and other animals.

It is also believed that the receptors may hamper the development of the disease. Especially in the case where hormones might be responsible for the abnormal growth.

The question as to whether genetics and nutrition play a role in mammary tumor development in dogs is not understood as yet. In canines, one SNP in exon 9 of BRCA1 and one SNP in exon 24 of BRCA2 were observed to be grossly linked with mammary tumors in dogs.

It was confirmed that the eating of red meat, being obese or overweight at one year of age or a year before the diagnosis is confirmed, might be connected with a higher risk of the development of mammary tumors in intact or ovariohysterectomized female dogs.

Practically speaking, each and every mammary cyst, should be considered as being possibly malignant, no matter the size or how many mammary glands might be present.

The occurrence whereby mammary cancers, such as carcinomas spread in dogs is mostly associated with the lymph nodes and the lungs. In canines between five and ten percent of the mammary cancers might even produce bone cancers in areas such as the axial skeleton.

Compilation of Dogs Tumors Pictures

If you would like to know more about reproductive tumors, read our article “Tumors of the reproductive system in female dogs” on our blog.