breast cancer on dogs quot;Breast Cancer Awareness In Dogs quot; by tinypaws Redbubble
Breast Cancer

Among all cancers in ladies, he takes the first place. In most cases, breast cancer develops inside 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 from the nipple along with the nipple of the field (Paget's disease with the breast). For the nodular cancers are seen as the node having a diameter of up to several centimeters. In some instances, a decent knot, is permeated with whitish layers tissue penetrating to the surrounding dimply skin, in others - a soft, juicy for the cut, splits easily. Diffuse cancer of prostate is included for any considerable distance, the contours with the tumor are marked bad. Sometimes the cancer invades your skin layer and forms around the surface of decaying mushroom formation - a cancerous ulcer. In certain cases, the tumor spreads across the surface from the breast and the iron is covered with a dense shell.

From Dogs, Answers About Breast Cancer The New York Times

In histological structure would be the following forms of breast cancer:

• noninvasive: intralobular and intraduct;

• infiltrative.

Noninvasive breast cancers can 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 permitted to distinguish different degree of malignancy. This type of cancer include, especially, infiltrating ductal and lobular carcinoma, which will has got the structure of scirrhus, along with Paget's disease.

Causes of Breast Cancer.

The reasons for breast cancers often are hormonal changes inside body: the entry into menopause, if you find an engaged restructuring in the hormonal regulation of the woman, the ovaries lose their activity, decreased output of progesterone and estrogen, one's body goes through, "hormonal crisis." The mammary gland and endometrium (lining with the uterus) are most understanding of these changes, the breast type tissue actually starts to dissolve and stay replaced by fat.

Genetic studies of mammary tumours breast cancer in dogs

Scientifically established that the female hormones estrogen-, plays a key role within the continuing development of cancer of the breast. The excess hormones inside body creates a favorable background for developing the illness. The least active hormones estrogen behave in pregnancy and after birth - during breastfeeding. It is proved that this birth and prolonged breastfeeding (a lot more than twelve months) to cut back potential risk of developing breast cancers. On the other hand, abortion lead to hormonal "explosion" in a woman's body that could trigger the continuing development of tumors. So far there isn't any consensus concerning the impact around the growth and development of tumors of hormonal contraceptive drugs, but it's belief that these drugs reduce potential risk of developing cancer of the breast, but increase the chance of developing cancer of the female genital organs, and osteoporosis. In addition predisposition to breast cancer could cause harmful environmental factors: the planet, as well as inflammatory diseases previously deferred breast - mastitis.

In addition, patients having a category of first-degree relatives with cancer of the breast (mothers and sisters) probability of creating a tumor increasing by greater than half - familial forms of cancer.

Benign breast diseases such as fibrocystic breast disease, or fibroadenoz intraduct papillomatosis alone don't result in cancer, but as well, create an unfavorable background due to the development.

The reason for cancer of the breast would be the effects 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 result in cancer from the breast and female reproductive :, with the excess fatty tissue inside the body, it becomes a different endocrine organ and starts to actively produce hormones-estrogens, whose action and provokes the development of tumors.

Symptoms of Breast Cancer

There are many forms in the growth of breast cancer:

- Nodular form, the most typical, is characterized by a dense knot of 0.5 to cm or more, it's characterized by all of the following symptoms;

- Diffuse. All of them are very aggressive, grow quickly, almost lightning speed, the tumor without clear boundaries, "spreading" in the breast and skin. For the first couple of forms are characteristic signs and symptoms of inflammation: pain of the breast, a bright red colorization of the skin it raises body's temperature to 39 degrees C. In view of those symptoms often occur, and errors in carried out patients treated for inflammatory diseases, that happen to be named and therefore are described these forms cancer of the breast. When tubular carcinoma breast cancer cover being a "skin" of their contracting and decreasing in space.

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

For small tumors in the breast, any symptoms arise. The most observant females and their husbands can easily detect tumor site inside the gland by accident, but inside a large breast to detect small size hard knot. Revealed a knot can be painful when pressed, round, smooth and agile, this speaks in support of a benign tumor. Signs of malignancy other: a strong knot to touch the stone, its surface is uneven, it really is stationary or slightly shifted, could be firmly fixed to the surrounding tissue or skin, usually painless, can reach a substantial size (greater than 3 - 5 cm and quite often 10-15 cm).

Need to evaluate the surface in the skin within the tumor: the malignant process will likely be observed retraction of the skin, obtaining inside the folds, wrinkles, a signal of "lemon peel" - an area swelling with the skin over the tumor, might be a direct tumor invasion to skin surface, then it becomes a bright red colorization and sprawl as "cauliflower."