Congenital melanocytic nevi (CMN) are benign skin lesions present at birth, which can vary significantly in size and appearance. While most CMN are harmless, larger nevi can pose a risk of ...

Although a diagnosis can usually be made without further investigation, other congenital melanocytic nevi can present in similar locations. A café-au-lait patch can present on the face ...

Once the Californian couple realised their son had a large facial birthmark, they researched their newborn’s condition, to discover that he had Giant Hairy Congenital Melanocytic Nevus (CMN).