Colloid carcinoma of breast

Medullary breast carcinoma is a rare type of breast cancer that often can be treated successfully. It is relatively circumscribed.It involves infiltration by lymphocyte (a type of white blood cell) in and around the tumor that can be seen when viewed under a microscope.This is the only breast cancer associated with a loss of function mutation in BRCA1, and thus the only form associated with a hereditary mutation. [Source: Wikipedia ]