invasive lobular breast carcinoma (MONDO_0005051) is an infiltrating lobular adenocarcinoma of the breast. The malignant cells lack cohesion and are arranged individually or in a linear manner (Indian files), or as narrow trabeculae within the stroma. The malignant cells are usually smaller than those of ductal carcinoma, are less pleomorphic, and have fewer mitotic figures. Also known as: classic invasive lobular carcinoma, infiltrating lobular adenocarcinoma, infiltrating lobular breast carcinoma, infiltrating lobular carcinoma of breast, infiltrating lobular carcinoma of the breast, invasive lobular adenocarcinoma, invasive lobular carcinoma, invasive lobular carcinoma of breast.