Tubular carcinoma is a type of invasive ductal carcinoma (IDC). Its distinguishing feature is the visual appearance of the cells under a microscope. In this case, the cancer cells resemble tiny tubes that are well differentiated, meaning the cells are more like normal cells than poorly-defined ones.
This type of breast cancer accounts for no more than 2% of all breast cancer diagnoses and occurs most frequently in women who are in their 50s.
Tubular breast carcinoma tends to be small, highly estrogen dependent and HER2/neu negative. Women with this type of breast cancer are less likely to metastasize and have an excellent survival rate.