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Terminology. Invasive carcinoma NST is a type of breast cancer. It is one of the invasive breast cancers that originates from the breast ductal system, so that it is a type of ductal carcinoma. A defining feature of this ductal carcinoma is that it lacks the "specific differentiating features" of other types of ductal carcinomas.
Breast cancer classification divides breast cancer into categories according to different schemes criteria and serving a different purpose. The major categories are the histopathological type, the grade of the tumor, the stage of the tumor, and the expression of proteins and genes .
TNM staging system. The TNM Classification of Malignant Tumors ( TNM) is a globally recognised standard for classifying the anatomical extent of the spread of malignant tumours (cancer). It has gained wide international acceptance for many solid tumor cancers, but is not applicable to leukaemia or tumors of the central nervous system.
Worldwide, breast cancer is the leading type of cancer in women, accounting for 25% of all cases. [16] In 2018, it resulted in two million new cases and 627,000 deaths. [17] It is more common in developed countries, [2] and is more than 100 times more common in women than in men.
Histopathologic types of breast cancer, with relative incidences and prognoses, with "invasive lobular carcinoma" at top right. Invasive lobular carcinoma (ILC) is breast cancer arising from the lobules of the mammary glands. [ 1] It accounts for 5–10% of invasive breast cancer. [ 2][ 3] Rare cases of this carcinoma have been diagnosed in men ...
Triple-negative breast cancer comprises 15–20% of all breast cancer cases [3] and affects more young women or women with a mutation in the BRCA1 gene than other breast cancers. [4] Triple-negative breast cancers comprise a very heterogeneous group of cancers. TNBC is the most challenging breast cancer type to treat. [5]
Metastatic breast cancer. Metastatic breast cancer, also referred to as metastases, advanced breast cancer, secondary tumors, secondaries or stage IV breast cancer, is a stage of breast cancer where the breast cancer cells have spread to distant sites beyond the axillary lymph nodes. There is no cure for metastatic breast cancer; [ 1] there is ...
In the United Kingdom, breast cancer is the most common cancer type, affecting around 1 in 8 women. It can be loosely divided into non-invasive, where the cancer is localized to the ducts or lobules in which it originated ( in-situ ), or invasive, where the cancer cells have spread beyond the initial duct or lobule into the surrounding breast ...