| The lobes are made up of milk-producing glands, called lobules, which secrete milk into a system of ducts. |
| The stroma consists of fatty tissue and ligaments surrounding the ducts and lobules, blood vessels and lymphatic vessels. |
| Histologically, sebaceous hyperplasia consists of enlarged lobules of mature sebaceous glands with a central dilated duct. |
| Case 1 was highly cellular, contained scattered cells with argyrophilic granules, and was not associated with cancerization of lobules. |
| Sharply marginated secondary lobules may be seen in infection and hemorrhage. |
| This classification was based on the belief that ductal carcinomas arose from ducts and lobular carcinomas from lobules. |
