Definition of Infiltrating ductal carcinoma of the breast
Infiltrating ductal carcinoma of the breast definition - medical term
Infiltrating ductal carcinoma
is one of several recognized specific patterns of cancer of the breast. It is so
named because it begins in the cells forming the ducts of the breast. It is the
most common form of breast cancer, comprising 65-85% of all cases.
O n a mammogram, invasive ductal carcinoma is usually visualized as a mass with
fine spikes radiating from the edges (spiculation). It may also appear as a smooth
edged lump in the breast.
On physical examination, this lump usually feels much harder or firmer than benign
causes of lumps in the breast.
On microscopic examination, the cancerous cells invade and replace the normal
breast tissue.
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