Breast Cancer in Dogs Case Studies Paws Claws Animal Hospital

breast cancer on dogs Breast Cancer in Dogs Case Studies Paws Claws Animal Hospital
Breast Cancer

Among all cancers ladies, he takes the ultimate place. In most cases, cancer of the breast develops in the presence of precancerous changes. This is primarily a benign mammary dysplasia and papilloma ducts.

Breast cancer is represented macroscopically nodular and diffuse forms, as well as cancer of the nipple as well as the nipple with the field (Paget's disease with the breast). For the nodular cancers are seen as the node developing a diameter all the way to several centimeters. In some instances, a tight knot, is permeated with whitish layers tissue penetrating in the surrounding fatty tissue, in others - a soft, juicy for the cut, splits easily. Diffuse prostate cancer is roofed for the considerable distance, the contours of the tumor are marked bad. Sometimes the cancer invades your skin layer and forms for the surface of decaying mushroom formation - a cancerous ulcer. In some instances, the tumor spreads over the surface from the breast and the iron is included using a dense shell.

In histological structure will be the following kinds of cancer of the breast:

• noninvasive: intralobular and intraduct;

• infiltrative.

Noninvasive breast cancer might be intralobular (lobular carcinoma in situ), and intraduct (ductal carcinoma in situ).

Infiltrating (invasive) cancer is characterized by varying degrees of tissue and cell irregularities, which allowed to distinguish different degree of malignancy. This type of cancer include, particularly, infiltrating ductal and lobular carcinoma, which will gets the structure of scirrhus, along with Paget's disease.

Causes of Breast Cancer.

The factors behind cancer of the breast often are hormonal changes inside the body: the entry into menopause, if you have an active restructuring of the hormonal regulation from the woman, the ovaries lose their activity, decreased creation of progesterone and estrogen, one's body goes through, "hormonal crisis." The mammary gland and endometrium (lining of the uterus) are most responsive to these changes, the breast tissue actually starts to dissolve and become replaced by fat.

Scientifically established the female hormones estrogen-, plays a key role within the growth and development of breast cancers. The excess hormones in the body produces a favorable background for developing the illness. The least active hormones estrogen behave during pregnancy and after birth - during breastfeeding. It is proved the birth and prolonged breastfeeding (greater than 1 year) to lessen potential risk of developing breast cancer. On the other hand, abortion bring about hormonal "explosion" in a very woman's body that could trigger the growth and development of tumors. So far there is no consensus in regards to the impact around the growth and development of tumors of hormonal contraceptive drugs, yet it's believed that these drugs reduce the chance of developing cancer of the breast, but increase the risk of developing cancer of the female genital organs, and osteoporosis. In addition predisposition to breast cancers may cause harmful environmental factors: the planet, in addition to inflammatory diseases previously deferred breast - mastitis.

In addition, patients which has a family of first-degree relatives with breast cancer (mothers and sisters) likelihood of having a tumor increasing by more than half - familial types of cancer.

Benign breast diseases like fibrocystic breast disease, or fibroadenoz intraduct papillomatosis alone tend not to result in cancer, but at the same time, create an unfavorable background because of its development.

The reason behind breast cancer may be the outcomes of radiation, including irradiation with the chest for other diseases (lung tumors, the lymphatic system), prolonged and frequent chest X-ray studies on inflammatory diseases or pulmonary tuberculosis.

Constitutional obesity can cause cancer of the breast and female reproductive system, with an excess fatty tissue inside the body, it becomes another endocrine organ and starts to actively produce hormones-estrogens, whose action and provokes the continuing development of tumors.

Symptoms of Breast Cancer

There are many forms of the growth of breast cancer:

- Nodular form, the most frequent, is seen as an a dense knot of 0.5 to cm or higher, it can be characterized by all of the following symptoms;

- Diffuse. All of them are very aggressive, grow quickly, almost lightning speed, the tumor with no clear boundaries, "spreading" in the breast and skin. For the first 2 forms are characteristic warning signs of inflammation: pain of the breast, a bright red color of the skin it raises temperature to 39 degrees C. In view of such symptoms often occur, and errors in carried out patients treated for inflammatory diseases, that happen to be named and so are referred to these forms breast cancer. When tubular carcinoma cancer of the breast cover as a "skin" of their contracting and decreasing in size.

In some cases, breast cancers manifests inside the form of metastases inside the lymph nodes about the affected side, often ceases to detect the tumor itself - show hidden breast cancers.

For small tumors of the breast, any symptoms arise. The most observant ladies and their husbands have the ability to detect tumor site inside the gland accidentally, but in the large breast to detect small size hard knot. Revealed a knot could be painful when pressed, round, smooth and agile, this speaks in favor of a benign tumor. Signs of malignancy other: a good knot to touch the stone, its surface is uneven, it's stationary or slightly shifted, might be firmly fixed on the surrounding tissue or skin, usually painless, can reach an important size (over 3 - 5 cm and often 10-15 cm).

Need to gauge the surface from the skin within the tumor: the malignant process will probably be observed retraction of the skin, collecting inside the folds, wrinkles, a symptom of "lemon peel" - a neighborhood swelling with the skin in the tumor, can be a direct tumor invasion to the skin surface, then it is a bright red colorization and sprawl as "cauliflower."

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