PurrViews: Breast Tumors in Dogs

breast cancer on dogs PurrViews: Breast Tumors in Dogs
Breast Cancer

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

In histological structure are the following forms of breast cancers:

• noninvasive: intralobular and intraduct;

• infiltrative.

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

Infiltrating (invasive) cancer is seen as a varying examples 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 often gets the structure of scirrhus, as well as Paget's disease.

Causes of Breast Cancer.

The causes of breast cancer often are hormonal changes within the body: the entry into menopause, if you find an energetic restructuring from the hormonal regulation with the woman, the ovaries lose their activity, decreased output of progesterone and estrogen, your body is certainly going through, "hormonal crisis." The mammary gland and endometrium (lining of the uterus) are most tuned in to these changes, the breast type tissue starts to dissolve and stay replaced by fat.

Scientifically established how the female hormones estrogen-, plays an important role in the growth and development of breast cancer. The excess hormones in the body generates a favorable background for developing the illness. The least active hormones estrogen behave when pregnant and after birth - during breastfeeding. It is proved how the birth and prolonged breastfeeding (more than twelve months) to lessen the potential risk of developing breast cancers. On the other hand, abortion result in hormonal "explosion" in a very woman's body that can trigger the growth and development of tumors. So far there is no consensus about the impact on the growth and development of tumors of hormonal contraceptive drugs, yet it's thought that these drugs reduce the chance of developing cancer of the breast, but increase the chance of developing cancer with the female genital organs, and osteoporosis. In addition predisposition to cancer of the breast may cause harmful environmental factors: the planet, in addition to inflammatory diseases previously deferred breast - mastitis.

In addition, patients with a category of first-degree relatives with breast cancer (mothers and sisters) probability of developing a tumor increasing by over half - familial types of cancer.

Benign breast diseases including fibrocystic breast disease, or fibroadenoz intraduct papillomatosis alone don't bring about cancer, but concurrently, create an unfavorable background because of its development.

The reason behind breast cancer may be the connection between radiation, such as irradiation in 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 system, by having an excess fatty tissue within the body, it will become a different endocrine organ and begins to actively produce hormones-estrogens, whose action and provokes the growth and development of tumors.

Symptoms of Breast Cancer

There are some forms from the growth of breast cancer:

- Nodular form, the most common, is seen as a dense knot of 0.5 to 5 cm or maybe more, it really is seen as a all with the following symptoms;

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

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

For small tumors of the breast, any symptoms arise. The most observant females and their husbands can easily detect tumor site within the gland by accident, 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 in support of a benign tumor. Signs of malignancy other: a decent knot to touch the stone, its surface is uneven, it is stationary or slightly shifted, can be firmly fixed for the surrounding tissue or skin, usually painless, can reach a substantial size (a lot more than three to five cm and infrequently 10-15 cm).

Need to gauge the surface with the skin on the tumor: the malignant process will be observed retraction of the skin, collecting inside the folds, wrinkles, a symptom of "lemon peel" - an area swelling of the skin in the tumor, may be a direct tumor invasion to your skin surface, then it will become a bright red colorization and sprawl as "cauliflower."

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