A primary or metastatic malignant neoplasm involving the breast. The vast majority of cases are carcinomas arising from the breast parenchyma or the nipple. Malignant breast neoplasms occur more frequently in females than in males. [NCIT: C9335]
An invasive breast carcinoma which is negative for expression of estrogen receptor (ER), progesterone receptor (PR), and human epidermal growth factor receptor 2 (HER2). [NCIT: P378]
A biologic subset of breast carcinoma defined by low to moderate expression of genes characteristic of luminal epithelial cells including estrogen receptor (ER), and high expression of GGH, LAPTM4B, and CCNE1. This subtype of breast cancer is associated with a good prognosis, although not as favorable as the luminal A subtype. [NCIT: C53555]
A biologic subset of breast carcinoma defined by high expression of genes characteristic of luminal epithelial cells, including estrogen receptor (ER), estrogen regulated protein LIV-1, and the transcription factors hepatocyte nuclear factor 3, HNF3A, XBP1, and GATA 3. This subtype of breast cancer is associated with a good prognosis. [NCIT: C53554]
A biologic subset of breast carcinoma defined by high expression of HER2, GRB7, and TRAP100, and by lack of expression of estrogen receptor (ER). [NCIT: C53556]
A benign or malignant neoplasm of the breast parenchyma. It can originate from the ducts, lobules or the breast adipose tissue. Breast neoplasms are much more common in females than males. [NCIT: C2910]
A malignant tumor arising from epithelial cells. Carcinomas that arise from glandular epithelium are called adenocarcinomas, those that arise from squamous epithelium are called squamous cell carcinomas, and those that arise from transitional epithelium are called transitional cell carcinomas. Morphologically, the malignant epithelial cells may display abnormal mitotic figures, anaplasia, and necrosis. Carcinomas are graded by the degree of cellular differentiation as well, moderately, or poorly differentiated. Carcinomas invade the surrounding tissues and tend to metastasize to other anatomic sites. Lung carcinoma, skin carcinoma, breast carcinoma, colon carcinoma, and prostate carcinoma are the most frequently seen carcinomas. [NCIT: C2916]
A benign or malignant neoplasm that arises from and is composed of epithelial cells. This category include adenomas, papillomas, and carcinomas. [NCIT: C3709]
A tumor composed of atypical neoplastic, often pleomorphic cells that invade other tissues. Malignant neoplasms often metastasize to distant anatomic sites and may recur after excision. The most common malignant neoplasms are carcinomas (adenocarcinomas or squamous cell carcinomas), Hodgkin and non-Hodgkin lymphomas, leukemias, melanomas, and sarcomas. [NCIT: C9305]