Should benign moles be removed to prevent them from turning into skin cancer?

In general, it is not medically recommended to remove benign or even atypical moles as a routine measure to prevent them from turning into skin cancer (melanoma). Scientific evidence indicates that most ordinary moles remain harmless throughout a person's life. Furthermore, the vast majority of melanoma cases do not originate from pre-existing moles, but rather appear as new spots or lesions in areas of skin that previously appeared normal [1].

Why do we not resort to preventive mole excision?

Moles, medically known as nevi, are natural clusters of pigment cells called melanocytes. In most cases, an adult has between 10 to 40 moles, which are a normal part of skin structure [2]. Removing every benign mole for prevention is not a justified procedure because the risk of a single mole turning into a malignant tumor is extremely low. Moreover, surgical procedures to remove moles are not without risks or scarring. Therefore, surgical intervention is usually limited to cases where suspicious signs appear, necessitating histological examination to rule out the presence of cancer cells [1].

Warning signs that require immediate attention

Instead of removing benign moles, doctors focus on careful monitoring for any changes in the mole's appearance. If you notice a change in color, an irregular increase in size, a change in shape, or the texture of the mole, you should consult a doctor. Signs that require urgent medical examination also include if the mole becomes hard, lumpy, dry, or if it begins to itch, bleed, or ooze fluid [3]. It is always recommended to use the ABCDE rule to identify early signs of melanoma. For more details on applying this rule, you can view the Mole Guide: How to use the ABCDE rule for early detection of skin cancer (Arabic).

Dealing with atypical moles (Dysplastic Nevi)

Atypical moles differ from ordinary moles in appearance; they are often larger (greater than 5 mm) and have irregular borders or mixed colors. Although they may be a risk factor that increases the likelihood of developing melanoma, they are not cancerous themselves, and most do not turn into malignant tumors [1]. For individuals who have many of these moles, doctors recommend regular periodic skin examinations (annually or every 3–6 months depending on family history) to monitor for any changes, rather than removing them surgically as a precaution [1].

Practical steps to maintain skin health

True prevention of skin cancer remains linked to protecting the skin from ultraviolet (UV) rays and avoiding excessive exposure to artificial tanning beds. People who have a large number of moles or have a family history of melanoma should be more vigilant. If any change is detected in an existing mole or a new unusual spot appears, a dermatologist should be visited for an accurate evaluation, as early diagnosis significantly increases the chances of successful treatment if any real health problem is discovered [1].

Medical references

• Common Moles, Dysplastic Nevi, and Risk of Melanoma
• Moles
• What Does a Mole Look Like?