<unk>  is a rare type of breast cancer that is characterized as a relatively circumscribed tumor with pushing, rather than infiltrating, margins. It is histologically characterized as poorly differentiated cells with abundant cytoplasm and pleomorphic high grade vesicular nuclei. It involves lymphocytic (a type of white blood cell) infiltration in and around the tumor and can appear to be brown in appearance with necrosis and hemorrhage. Prognosis is measured through staging but can often be treated successfully and has a better prognosis than other infiltrating breast<unk> s.<unk>  is one of five types of epithelial breast cancer: ductal, lobular,<unk> , colloid, and tubular. Ductal<unk>  in situ (DCIS) is less commonly present, and<unk>  breast cancer presents as a soft, fleshy mass with a pushing border. Tumors commonly possess mutations of E-cadherin, which results in its overexpression. Strengthened adhesions between tumor cells reduce the frequency of metastasis.
Medullary breast carcinoma
Mucinous carcinoma of the breast
Adenomyoepithelioma of the breast
Paget's disease of the breast
Hereditary lobular breast cancer
Inflammatory breast cancer
Apocrine gland carcinoma
Bartholin gland carcinoma