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We have occasionally received questions about skin tags and whether these are a form of skin cancer. The most recent question involved a skin tag located under the breast. While skin tags are not cancerous, it is important to be aware of any growths and monitor them to make sure you contact your doctor if there is a problem. If you do have skin tags, be sure to note the location and the appearance when doing a self-exam so you can monitor the growth.
Skin tags are one of many forms of noncancerous skin growths that are abnormal accumulations of different types of skin cells. This group also includes moles, lumps of fatty material called lipomas, and red or purple discolorations called angiomas. They may be present at birth or develop later. Skin tags are soft and usually small, but if left to grow for years they can become an inch or more long. They are usually flesh-colored or a little darker. They typically grow on the neck, underarms and groin, but can be found in many other parts of the body as well.