About Large Congenital Melanocytic Nevus (CMN)


There are so many questions to be answered about Large Congenital Melanocytic Nevus (CMN). What is a large nevus? What medical challenges are faced by those with CMN? What about self esteem... how can I deal with people who stare, point or worse? What kind of work is being done to find a cure or prevention for CMN? The list goes on and on.

Nevus Outreach, Inc. has provided these pages to help you find the answers you need. If you have questions that we don't address here, though, we want to hear from you. Please contact us and let us know how we can better serve the nevus community. Download our brochure here.

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Check out the pages listed below for more information. Don't see what you're looking for? Contact us, & we'd be happy to answer any questions you may have.

What is a Large/Giant Congenital Melanocytic Nevus?

Large congenital melanocytic nevus... what does that even mean? We break down the individual terms to help you make sense of the medical jargon.  Continue Reading »


Frequently Asked Questions about CMN

Here are the answers to the questions we get asked the most about large congenital melanocytic nevi. It is our goal to provide you with the information you need about large/giant congenital melanocytic nevi.  Continue Reading »


Medical Challenges Associated with Large CMN

One of the primary medical challenges for people with large CMN is lack of accurate information provided by many professionals. Because it is a  rare condition, most doctors have never had experience with large congenital melanocytic nevi (LCMN). Misinformation is often more common than not, and many new parents are given an incorrect and often frightening prognosis, or simply not given information at all.  Continue Reading »


Psychological Challenges Associated with CMN

 Having a mole that covers a significant part of your body can be challenging. Visible large moles or birthmarks are both unusual and noticeable. They definitely look "different," and especially draw attention when they're on the face. Other people sometimes react, without considering how they come across to the person with CMN or their parents.  Continue Reading »


CMN and Nevus Terms Glossary

 This guide was designed to help you understand the terminology you may encounter with regard to large/giant congenital melanocytic nevi (CMN) and neurocutaneous melanocytosis (NCM). It briefly defines, in layman’s terms, the technical terminology used by doctors and medical professionals.  Continue Reading »


Treatment Options

In a nutshell – there are no magic answers. Even though doctors remove small moles with good results every day, a large nevus involves much more.  Continue Reading »


Nevus Removal

There are several reasons that patients sometimes decide to undergo removal of a large nevus. Most of the time, the overriding reasons to remove a congenital pigmented nevus are first to reduce melanoma risk and second to improve appearance which can be fundamental to improving a patient’s overall psychosocial state.  Continue Reading »


CMN Classification

Learn about CMN Classifications  Continue Reading »


Other Nevus Resources

There are a number of other organizations that share aspects of what we do in common with us. Here is a list of them with links to their web sites…  Continue Reading »


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Teenage girl at the Nevus Conference