Breast cancer in dogs, or the so-called mammary gland tumor, is the most prevalent tumor experienced by dogs. The danger of having a mammary tumor among unsprayed dogs reaches about 26 percent which is actually triple as compared to the risk of having breast cancer among women.
Female of about 6 years old are more prone to mammary gland tumors. Almost 45 percent of these are considered cancerous, whereas 55 percent are considered benign. Sporting breeds such as Poodles, Dachshunds and Boston Terries unfortunately have higher risk of having breast cancer. Multiple tumors are also very common. A bitch having one tumor has a tripled possibility to have a second tumor.
One way to determine the number of the mammary glands present in bitches is through counting their nipples. Usually, a female dog has 10 mammary glands – five on every midline sides; starting on the chest and unto the groin. The ones near are the groin should be the largest.
A painless bump or lump is a primary indicator of this types of canine cancer. In most cases, the lumps take place on the larger glands usually located near the groin. The lump could either be small or large and has indefinite or distinct boundaries. There are lumps which are moveable and there are also that stick to the skin and even on underlying muscles. Sometimes, the lump tends to ulcerate the skin which causes it to bleed.
Inflammatory canine breat cancer is considered as a fast and advanced neoplasm spreading all over mammary gland chains, as well as on nearby fat and skin. In just a couple of weeks, the dog will die. There is a difficulty in distinguishing between inflammatory cancer and severe septic mastitis.
Malevolent breast cancer in dogs extensively spreads; it mainly spread on the pelvic lymph nodes, as well as on the lungs. A chest X-ray needs to be undertaken first before getting a treatment so as to exclude lung metastases; these usually exist on about 30 percent of cancers.
A very useful way to determine if the pelvic lymph nodes are affected is the ultrasonography. However, if surgical elimination is anticipated, biopsy of the cancer may not be needed. Nonetheless, biopsy is necessary for inflammatory cancers since there’s only a bit to gain in trying out aggressive treatments for these lumps.
Treatment of Breast cancer in dogs
The best treatment for any type of mammary tumors is the removal of the lump with satisfactory boundaries of normal tissues. The amount of tissues to be eliminated will vary upon the size, as well as the tumor’s location.
Lumpectomy is the operation called for the removal of a small lump with a brim of normal tissue; whereas, the elimination of the whole mammary gland is called a simple mastectomy.
The exclusion of five mammary glands located on a side of the body is called a unilateral mastectomy; this usually includes inguinal lymph nodes. To identify the prognosis, a specimen is given to a pathologist for the analysis of the tissue.
Similiar with canine skin cancer, benign breast cancer in dogs is curable, as well as minor malignant lumps of less than an inch or about 25cm. Nonetheless, there is a lowly prognosis for those having aggressive tumors. They are seemingly to obtain metastatic illness.