Moles, also known as nevi, are pigmented growths on the skin that can be benign (non-cancerous) or malignant (cancerous). They are typically dark brown or black and can be raised or flat. Moles can appear anywhere on the body but are most commonly found on the face, arms, and legs.

Most moles are benign and do not require any treatment. However, a dermatologist will evaluate moles to determine if they are benign or if there is a concern for melanoma. This process is called a mole check or a skin cancer screening.

During a mole check, a dermatologist will examine the patient's skin and look for any moles or other skin changes that may be cause for concern. The dermatologist will also check for the ABCDEs of melanoma which are:

• Asymmetry: one half of the mole doesn't match the other half

• Border: irregular, scalloped or notched borders

• Color: varied color within the mole, shades of tan, brown or black

• Diameter: larger than 6 millimeters (about the size of a pencil eraser)

• Evolving: a mole that changes in size, shape, or color over time

If a mole or other skin change is found to be suspicious, a dermatologist may recommend a biopsy. During a biopsy, a small sample of the mole is removed and examined under a microscope to determine if it is cancerous.

Moles can change over time and it is important to monitor them for any changes and to have regular skin cancer screenings, especially for people who have a lot of moles or have a family history of skin cancer.