<prompt> Answer this question truthfullyWhat does breast cancer classification mean?  <response>: <reason> Type Subtype Ductal Ductal carcinoma in situ DCIS Comedo type: 60 Non-comedo type: 40 Papillary Micropapillary Cribriform Solid Intracystic papillary carcinoma in situ Invasive ductal carcinoma Invasive ductal carcinoma not otherwise specified NOS: 65 Tubular carcinoma of breast: 7-8 Tubulolobular carcinoma of breast Medullary carcinoma of breast: 2 Mucinous colloid carcinoma: 2 Malignant papillary lesions of the breast Papillary carcinoma of breast: 1-2 1 Lobular Lobular carcinoma in situ LCIS Invasive lobular carcinoma: 10 Other malignant breast tumors Inflammatory breast cancer: 1-4 Pagets disease of the breast Triple negative and basal-like breast cancers Metaplastic carcinoma of the breast Adenoid cystic carcinoma of the breast: 0.4 Apocrine carcinoma of the breast Sarcoma Angiosarcoma of the breast Fibrosarcoma of breast Extra-skeletal osteosarcoma of breast Malignant phyllodes tumor Angiosarcoma Rhabdomyosarcoma Lymphoma Non-hodgkin lymphoma Metastases to the breast The most common extra-mammary cancers that metastasise to breast are: Lymphoma leukaemia: most common extra mammary source Melanoma Sarcomas Prostate cancer: considered on the most frequent primary sites in men 4 Lung cancer Gastric cancer Ovarian cancer Renal cell cancerPhyllodes tumor Mammary fibromatosis: 0.2 of all breast tumors 5 Benign papillary lesions of the breastPapilloma Intraductal papilloma Solitary papilloma of breast Central solitary papilloma of breast Peripheral solitary papilloma of breast Multiple papillomata of breast Juvenile papillomatosis of breastGranular cell tumor of the breast 