This process is regulated by a number of mechanisms that tell the cell when to start to divide and when to remain stable. When these mechanisms are altered in a cell, it and its offspring begin uncontrolled division that eventually will lead to a tumor.

If these cells, they grow out of control, acquire the ability to invade tissues and organs around it (infiltration) and to move and grow in other parts of the body (metastasis), are called malignant tumor, which is what we call cancer.

When the tumor cells from an area of the anus, become malignant and are capable of invading surrounding healthy tissues and reach distant organs and implant them, we talk about anal cancer.

The lymphatic drainage of the tumor varies greatly depending on the location by referring to the dentate line. If the tumor is above the dentate line drain to the lymph node is peri-rectal and spine, as in a rectal cancer. If the tumor is located below the dentate line going lymphatic drainage to the inguinal and femoral nodes.

Anal cancer is a rare tumor, representing only 1.9% of all the tumors of the digestive tract.

However in the last 10 years the incidence has been increasing due to different causes or etiologic factors, such as infection of the human papilloma virus (HPV), sexually transmitted infection with human immunodeficiency virus or AIDS ( HIV) and greater use of Anal intercourse among both males and females.

Diagnosis of Breast Cancer
Over 90% of breast lumps are detected by the patient. It is therefore important that at the slightest suspicion arising of SSE, go immediately to your doctor. Despite multiple campaigns is common to find women who are not self-examine regularly, or that they do so inappropriately. Do not hesitate to ask your doctor about the correct way.

Any suspicious lump should be examined by the doctor as soon as possible. Many women are delaying unnecessarily the visit to the doctor to detect a breast lump, for fear of cancer, self-denial or hope that the problem will go away alone. It is important to emphasize that three-quarters of breast lumps are benign origin. And if evil, the sooner it is detected and treated, the greater the possibility of controlling this cancer.

Treatment of Breast Cancer
The doctor will make a complete review of the breasts and ask about your medical history and family history. Probably order a mammogram, especially with any suspicious finding. The diagnosis is confirmed by a biopsy, it can be done directly in the office, where a needle is taken with a sample of fluid or tissue from the affected part. For larger biopsies, surgery is needed and usually performed in a clinic or hospital.

Once the diagnosis is confirmed proceed with the removal of the tumor mass that may lead to the complete elimination of the breast and even the axillary nodes. Both full and partial excision, plastic and reconstructive surgeons may try to rebuild the breast.