Tumors may be localized or have spread, through blood vessels or via the lymphatic vessels, and have led to metastasize, a cancer in a distant organ to the original. Of all cases of breast cancer, only 7-10% of metastatic start them.
The breast cancers are classified as:
– Ductal carcinoma in situ in the cells of the walls of the milk ducts. Is a very localized cancer which has not spread to other areas or has metastasized. For this reason this disease ‘premalignant’ can be removed easily. The cure rate is around 100%. This type of tumor can be detected through a mammogram.
– Infiltrating ductal carcinoma (or invasive) is the one that begins in the breast duct but manages to pass through and adipose tissue of the breast and then can spread to other parts of the body. Is the most common of breast carcinomas, occurs in 80% of cases.
– Lobular carcinoma in situ originates in the mammary glands (or lobes) and, although not a true cancer, increases the risk that women can develop a cátumor in the future. Usually occurs before menopause. Once it is detected, it is important that women have a mammogram annually control and several clinical tests to monitor the possible development of cancer.
– Infiltrating lobular carcinoma (or invasive) begins in the mammary glands but it can spread and destroy other tissues. Between 10% and 15% of breast cancers are of this type. This carcinoma is more difficult to detect by mammography.
– Inflammatory carcinoma is a rare cancer, representing only 1% of all breast cancers. It is aggressive and fast growing. Makes breast skin redden and increase its temperature. The appearance of the skin becomes thick and hollow, like an orange, and wrinkles and bumps may appear. These symptoms are due to blockages that cause cancer cells to the lymph vessels.