Lobular Neoplasia
Lobular neoplasia can refer to: * Lobular carcinoma in situ * Invasive lobular carcinoma Invasive lobular carcinoma (ILC) is breast cancer arising from the lobules of the mammary glands. It accounts for 5–10% of invasive breast cancer. Rare cases of this carcinoma have been diagnosed in men (see male breast cancer). Types The his ... {{Short pages monitor ...
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Lobular Carcinoma In Situ
Lobular carcinoma ''in situ'' (LCIS) is an incidental microscopic finding with characteristic cellular morphology and multifocal tissue patterns. The condition is a laboratory diagnosis and refers to unusual cells in the lobules of the breast. The lobules and acini of the terminal duct-lobular unit (TDLU), the basic functional unit of the breast, may become distorted and undergo expansion due to the abnormal proliferation of cells comprising the structure. These changes represent a spectrum of atypical epithelial lesions that are broadly referred to as lobular neoplasia (LN). One subset of LN can be defined as LCIS based on specific cellular traits and tissue changes seen histologically. These lesions are preceded by atypical lobular hyperplasia and may follow a linear progression to invasive lobular carcinoma (ILC), with specific genetic aberrations. This process coincides with the progression of ductal neoplasia to ductal carcinoma in situ and invasive carcinoma. Rarely, term ...
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