Invasive lobular carcinoma (ILC) is the second most common type of breast cancer after invasive carcinoma, no special type (NST).  However, there are several subtypes of ILC, with the pleomorphic variant getting a lot of attention because most studies suggest it behaves in a more aggressive manner than typical ILC. Pathologists also recognize other variants [...]

Most invasive carcinomas of the breast are invasive carcinoma NST (no special type), also called invasive ductal carcinoma. These account for approximately 65-75 % of invasive carcinomas. The remaining invasive carcinomas are referred to as “special type.” The most common among the special types is invasive lobular carcinoma which is the second [...]