Look for any variation in the normal convexity of each breast, and compare one side with the other. Special positioning may again be useful. Shown here is marked flattening of the lower outer quadrant of the left breast.
A retracted nipple is flattened or pulled inward, as illustrated here. It may also be broadened, and feels thickened. When involvement is radially asymmetric, the nipple may deviate, i.e., point in a different direction from its normal counterpart, typically toward the underlying cancer.
Paget's Disease of the Nipple
This is an uncommon form of breast cancer that usually starts as a scaly, eczemalike lesion. The skin may also weep, crust, or erode. A breast mass may be present. Suspect Paget's disease in any persisting dermatitis of the nipple and areola.
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