Caring Matters Now Ireland supports children and adults affected by Congenital Melanocytic Naevi (CMN) Congenital Melanocytic Naevus is a brown or black mole present at birth. They can be very large, covering up to 80% of the body, and very numerous. Those with large or multiple CMN have an increased risk of melanoma). At the moment, large or multiple CMN are mostly untreatable. CMN syndrome is the association of these birthmarks with brain problems including tumours, and/or characteristic facial features, or subtle problems with hormones.
Registration No. 20205990