Many breast cancers are confined in the light of the ducts or acini, without invading the surrounding tissues. In this case they are called carcinomas in situ. When proliferating too much can break the so-called basement membrane and infiltrating spread to tissues surrounding ducts and acini and then are named as invasive ductal or lobular carcinoma. The in situ breast carcinomas are potentially curable if removed in its entirety. The name refers to carcinoma epithelial nature of cells that become malignant. Actually, strictly speaking, the so-called breast cancers are adenocarcinomas, as lineage cells derived from glandular (glands of external secretion). However, glands of external secretion derived from epithelial cells, so that the name of carcinoma implementing these tumors is generally accepted as correct, although not exact. In extremely rare cases are squamous cell cancers of the breast that could more accurately be called carcinomas. These tumors scaly, real strict carcinomas, arise from metaplasia of cells of glandular origin.
There is malignant breast tumors that are not glandular or epithelial lineage. These tumors, rare, other generic names are different. Sarcomas are a product of the malignant transformation of connective tissue cells of the breast. Lymphomas arising from lymphocytes, a type of white blood that comes from the lymph nodes. In general, lymphomas are rare tumors, but rarely lymphoma have their origin in one breast and not in other regions of the body.
9 Trackbacks to “Breast Cancer Tissue”