Treatment Prognosis for Breast Cancer in Dogs Canine Mammary Gland Tumors

breast cancer on dogs Treatment Prognosis for Breast Cancer in Dogs Canine Mammary Gland Tumors
Breast Cancer

Among all cancers in women, he takes consumers. In most cases, breast cancer 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 with the nipple and the nipple from the field (Paget's disease from the breast). For the nodular cancers are characterized by the node having a diameter of up to several centimeters. In certain instances, a decent knot, is permeated with whitish layers tissue penetrating in the surrounding fat, in other people - a soft, juicy about the cut, splits easily. Diffuse cancer of the prostate is roofed for the considerable distance, the contours in the tumor are marked bad. Sometimes the cancer invades skin and forms for the surface of decaying mushroom formation - a cancerous ulcer. In some cases, the tumor spreads across the surface from the breast and all sorts of the iron is covered having a dense shell.

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

• noninvasive: intralobular and intraduct;

• infiltrative.

Noninvasive breast cancers may be intralobular (lobular carcinoma in situ), and intraduct (ductal carcinoma in situ).

Infiltrating (invasive) cancer is seen as varying levels of tissue and cell irregularities, which in a position to distinguish different amount of malignancy. This type of cancer include, specifically, infiltrating ductal and lobular carcinoma, which often 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, should there be a dynamic restructuring of the hormonal regulation in the woman, the ovaries lose their activity, decreased manufacture of progesterone and estrogen, your body goes through, "hormonal crisis." The mammary gland and endometrium (lining from the uterus) are most responsive to these changes, the breast growth begins to dissolve and be replaced by fat.

Scientifically established that the female hormones estrogen-, plays a key role inside development of breast cancer. The excess hormones inside the body results in a favorable background for developing the sickness. The least active hormones estrogen behave while pregnant and after birth - during breastfeeding. It is proved the birth and prolonged breastfeeding (greater than one year) to relieve the potential risk of developing breast cancers. On the other hand, abortion cause hormonal "explosion" in a very woman's body that may trigger the progression of tumors. So far there's no consensus concerning the impact for the development of tumors of hormonal contraceptive drugs, however it is thought that these drugs reduce the chance of developing breast cancers, but increase the chance of developing cancer in the female genital organs, and osteoporosis. In addition predisposition to breast cancers could cause harmful environmental factors: environmental surroundings, as well as inflammatory diseases previously deferred breast - mastitis.

In addition, patients with a group of first-degree relatives with breast cancer (mothers and sisters) chance of creating a tumor increasing by over half - familial varieties of cancer.

Benign breast diseases such as fibrocystic breast disease, or fibroadenoz intraduct papillomatosis alone usually do not lead to cancer, but as well, create an unfavorable background because of its development.

The source of cancer of the breast could be the results of radiation, such as irradiation from 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 lead to cancer with the breast and female reproductive :, with an excess fatty tissue inside body, it is an outside endocrine organ and begins to actively produce hormones-estrogens, whose action and provokes the development of tumors.

Symptoms of Breast Cancer

There are some forms of the growth of cancer of the breast:

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

- Diffuse. All of them are very aggressive, grow quickly, almost lightning speed, the tumor without clear boundaries, "spreading" with the breast and skin. For the first couple of forms are characteristic indications of inflammation: pain from the breast, a bright red color with the skin it raises body temperature to 39 degrees C. In view of those symptoms often occur, and errors in carried out patients treated for inflammatory diseases, which can be named and so are known as these forms breast cancer. When tubular carcinoma breast cancer cover like a "skin" of the contracting and decreasing in size.

In some cases, cancer of the breast manifests inside form of metastases inside the lymph nodes around the affected side, often does not detect the tumor itself - show hidden breast cancers.

For small tumors in the breast, any symptoms arise. The most observant as well as their husbands are able to detect tumor site in the gland unintentionally, but in a large breast to detect small size hard knot. Revealed a knot might be painful when pressed, round, smooth and agile, this speaks for a benign tumor. Signs of malignancy other: a tight knot to touch the stone, its surface is uneven, it can be stationary or slightly shifted, might be firmly fixed to the surrounding tissue or skin, usually painless, can reach a substantial size (a lot more than 3 - 5 cm and quite often 10-15 cm).

Need to evaluate the surface of the skin over the tumor: the malignant process is going to be observed retraction of the skin, buying inside folds, wrinkles, a symptom of "lemon peel" - a nearby swelling from the skin within the tumor, might be a direct tumor invasion to skin surface, then it becomes a bright beautiful red colors and sprawl as "cauliflower."

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