Moles (Nevi)

Moles (nevi) are clusters of pigmented cells called melanocytes. There are 2 kinds of moles: common moles and atypical moles. 

Common moles are evenly pigmented, clearly demarcated from surrounding skin, and symmetrical. These moles are generally benign and are usually removed for cosmetic reasons. Moles that change in form or colour, however, may be indicative of melanoma, the most dangerous form of skin cancer. Any mole that has changed in appearance warrants an immediate biopsy. 

Atypical moles are usually larger than common moles, often fade into the surrounding skin, contain a mixture of colours, and tend to appear on sun-exposed skin. Atypical moles are more likely to result in melanoma compared to common moles. People with atypical moles should monitor their moles for changes and regularly have their skin examined by a doctor. 

More About Moles


People naturally develop moles during childhood, adolescence, and pregnancy. In fact, most adults have between 10 to 40 moles on their bodies. Our understanding of mole development is still incomplete, though genetics and environmental factors such as ultraviolet radiation and trauma play a role in it. 


Most people will develop moles throughout their life. Older people, as well as those with fair skin and light or red hair, tend to have more moles than others. 


Because most moles are benign, removing them is rarely necessary. Cosmetic and quality of life reasons are the main reasons for mole removal. 

Moles can be removed in 3 ways. They can be shaved out with a razor, “punched” out with a rounded blade or surgically excised with a scalpel. All 3 methods are safe and effective outpatient procedures requiring minimal recovery time. 

Our specialists at Danny Guo MD remove common moles for aesthetic and functional reasons and excise atypical moles and send them off for biopsy. Using only the best practices, we ensure a quick and painless experience without any complications. Continue the conversation on mole removal with Danny Guo MD by calling 403-286-6888 or filling out the online contact form below.

World Class Training and Experience

Dr. Guo is board-certified in Canada and the US and has 16 years of post-secondary education. He has received surgical and cosmetic training at more than 15 prestigious institutions in Canada, the US, and Asia. He is a fellowship-accredited Mohs surgeon with expert knowledge on facial anatomy and surgical reconstruction. Dr. Guo brings an exceptional understanding of medical and cosmetic dermatology and many years of extensive experience to his practice.

Common Skin Conditions

Dr. Guo is highly trained to treat a range of both medical and cosmetic skin conditions with the most current and cutting-edge techniques. Learn more about some of the more common skin conditions and the options for treatment. You do not need to suffer from painful and irritating skin conditions. Let Dr. Guo help you find a treatment solution.

Distinctive Dermatology

Distinctive Dermatology

Dr. Danny Guo promises informative, compassionate, and the most competent care for every dermatology patient he serves in the Calgary and Edmonton areas. He is highly educated and one of fewer than 30 fellowship-trained Mohs surgeons in Canada. For information on medical referrals or to book your complimentary cosmetic consultation contact our office at 1-403-286-6888.

Healthy. Beautiful.

Danny Guo MD is committed to serving patients in Calgary and Alberta as a trustworthy, knowledgeable, and reliable source for expert skincare. With a careful and compassionate approach, Dr. Guo offers medical and cosmetic dermatology services allowing patients to choose health and to feel good in the skin they are in.
Connect with our office at 1-403-286-6888 for your free consultation.

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