In this fist picture, I showed what depicts a healthy duct in the breast looks like.

Ductal carcinoma has started to form in this duct and this is some of the first signs of breast cancer

One of the worst/most common kinds of breast cancer is invasive ductal carcinoma. It can spread through the duct and move on to other parts of the body.

This is what is happening inside of the breast as a whole. As you can see, invasive ductal carcinoma begins inside of the duct and begins to spread.

One Comment

  1. Jacquelyn made use of six illustrations depicting what happens to the breast duct when cancer cells infiltrate it. She began by displaying a picture of a healthy breast duct followed by a series of ductal carcinoma spreading into and eventually out of it. Jacquelyn mentions that this carcinoma is common and can even move towards other parts of the body. The last picture she created showcases the effects of cancer on the whole breast. Carefully labeling the parts, Jacquelyn accurately distinguishes the rib bone, pectoralis muscle, intercostal muscle, fatty tissue, duct, nipple, and lobule. She explains that invasive ductal carcinoma begins inside of the duct and continuously spreads throughout the whole breast tissue.

    According to the American Cancer Society, Invasive ductal carcinoma (IDC) is also known as infiltrating ductal carcinoma and comprises 80% of all breast cancers. Invasive is defined as spreading into (the breast tissue), ductal means the cancer originated from the tubes that transport milk from the lobules to the nipple – the milk ducts; and carcinoma refers to any cancer that started in the skin or tissues covering internal organs. IDC is identified through a mammogram by a physician, and it is common to be asymptomatic initially. Some abnormal changes in the breast may indicate IDC such as swelling of the breast, skin irritation, skin peeling, nipple discharge, and retraction of the nipple. Diagnosis of IDC may vary but almost all procedures include a physical exam of the breast, a mammogram, and a biopsy. Treatment of IDC ranges from therapies (hormonal, chemo, radiation, and targeted) to surgery.
    Sheng, J. (n.d.). Invasive ductal carcinoma. Breast Cancer Organization. Retrieved April 18, 2022, from

    Jas Pujalte

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