How is morphological classification of breast cancer?

➢ In this classification, the main forms of breast carcinoma are as follows: ➢ A. Noninvasive 1. Ductal carcinoma in situ 2. Lobular carcinoma in situ ➢ B. Invasive 1. Invasive ductal carcinoma (includes all carcinomas that are not of a special type)—70% to 80% 2. Invasive lobular carcinoma— ~10% to 15% 3. Carcinoma with medullary features— ~5% 4. Mucinous carcinoma (colloid carcinoma) — ~5% 5. Tubular carcinoma— ~5% 6. Other types