👉 The term "becker" is a medical term used to describe a type of cancer called breast cancer. It's also known as ductal carcinoma in situ (DCIS) or invasive ductal carcinoma in situ (IDCIS). This type of cancer occurs when the cells in your breast do not have any cancerous changes, but instead are normal and healthy. Treatment for this type of cancer depends on how advanced it is and if you're at risk of spreading to other parts of your body