From Dogs, Answers About Breast Cancer The New York Times

breast cancer on dogs From Dogs, Answers About Breast Cancer The New York Times
Breast Cancer

Among all cancers in females, he takes the ultimate place. In most cases, breast cancers 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 in the nipple and the nipple of the field (Paget's disease from the breast). For the nodular cancers are seen as a the node using a diameter all the way to several centimeters. In some instances, a strong knot, is permeated with whitish layers tissue penetrating in to the surrounding fat, in others - a soft, juicy around the cut, splits easily. Diffuse cancer of prostate is roofed to get a considerable distance, the contours from the tumor are marked bad. Sometimes the cancer invades your skin layer and forms about the surface of decaying mushroom formation - a cancerous ulcer. In some cases, the tumor spreads down the surface of the breast and many types of the iron is included with a dense shell.

In histological structure would be the following varieties 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 seen as a varying levels of tissue and cell irregularities, which allowed to distinguish different amount of malignancy. This type of cancer include, particularly, infiltrating ductal and lobular carcinoma, which often contains the structure of scirrhus, in addition to Paget's disease.

Causes of Breast Cancer.

The reasons behind breast cancer often are hormonal changes inside body: the entry into menopause, when there is an active restructuring from the hormonal regulation with the woman, the ovaries lose their activity, decreased manufacture of progesterone and estrogen, one's body goes through, "hormonal crisis." The mammary gland and endometrium (lining from the uterus) are most understanding of these changes, the breast type tissue begins to dissolve and stay replaced by fat.

Scientifically established that this female hormones estrogen-, plays an integral role in 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 how the birth and prolonged breastfeeding (over twelve months) to reduce the potential risk of developing cancer of the breast. On the other hand, abortion bring about hormonal "explosion" inside a woman's body that could trigger the progression of tumors. So far there's no consensus in regards to the impact around the growth and development of tumors of hormonal contraceptive drugs, but it's considered that these drugs reduce the potential risk of developing cancer of the breast, but increase potential risk of developing cancer of the female genital organs, and osteoporosis. In addition predisposition to cancer of the breast might cause harmful environmental factors: the surroundings, and also inflammatory diseases previously deferred breast - mastitis.

In addition, patients which has a group of first-degree relatives with breast cancers (mothers and sisters) probability of creating a tumor increasing by over half - familial kinds of cancer.

Benign breast diseases for example fibrocystic breast disease, or fibroadenoz intraduct papillomatosis alone tend not to result in cancer, but simultaneously, create an unfavorable background due to the development.

The reason for breast cancer would be the results of radiation, like 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 from the breast and female reproductive :, by having an excess dimply skin inside body, it is an outside endocrine organ and starts to actively produce hormones-estrogens, whose action and provokes the progression of tumors.

Symptoms of Breast Cancer

There are several forms from the growth of breast cancers:

- Nodular form, the most common, is seen as a dense knot of 0.5 to five cm or higher, it can be seen as all from the following symptoms;

- Diffuse. All of them are very aggressive, grow quickly, almost lightning speed, the tumor with no clear boundaries, "spreading" with the breast and skin. For the first two forms are characteristic signs and symptoms of inflammation: pain of the breast, a bright beautiful red colors with 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 they are known as these forms breast cancers. When tubular carcinoma breast cancers cover like a "skin" of its contracting and decreasing in dimensions.

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

For small tumors of the breast, any symptoms arise. The most observant ladies and their husbands are able to detect tumor site inside the gland unintentionally, 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 for a benign tumor. Signs of malignancy other: a tight knot to touch the stone, its surface is uneven, it really is stationary or slightly shifted, can be firmly fixed towards the surrounding tissue or skin, usually painless, can reach an important size (a lot more than three to five cm and quite often 10-15 cm).

Need to gauge the surface of the skin on the tumor: the malignant process is going to be observed retraction with the skin, buying in the folds, wrinkles, a signal of "lemon peel" - an area swelling from the skin within the tumor, can be a direct tumor invasion to skin surface, then it becomes a bright beautiful red colors and sprawl as "cauliflower."

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