9 rows · Although breast cancer is often referred to as one disease, there are many different types of. A tumor is a mass of abnormal tissue. There are two types of breast cancer tumors: those that are non-cancerous, or ‘benign’, and those that are cancerous, which are ‘malignant’.
Jan 22, · A phyllodes tumor also can look like a more common type of benign breast growth called a fibroadenoma. A fibroadenoma is a solid, growing lump of normal breast cells that is . Most breast lumps are benign, which means they're not cancer. Benign breast lumps usually have smooth edges and can be moved slightly when you push against them. They are often .
Rarely breast cancer can begin in the connective tissue that's made up of muscles, fat and blood vessels. Cancer that begins in the connective tissue is called sarcoma. Examples of sarcomas . Tumor size is part of breast cancer staging. In the TNM staging system, a “T” followed by a number shows the size of the tumor. In some cases, the size of the tumor cannot be determined (TX) or a tumor .