Mondor's Cords are firm cord-like bands that sometimes form just under the skin near the breast. One or more cords may appear. They are completely harmless and affect a small percentage of women. They can be painful and usually begin 1 to 4 weeks following surgery. Warm compresses and anti-inflammatories such as ibuprofen help to alleviate the discomfort. They will eventually go away in a month or two.