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. Other reasons to remove a nevus may be to improve the strength, texture, sensation, and sweat gland activity of the affected area.
Small nevi can be removed by simple surgical excision. The nevus is cut out, and the adjacent skin stitched together leaving a small scar. Removal of a large congenital nevus, however, requires replacement of the affected skin. While it is almost impossible to remove every cell of a large nevus, the goal is to remove as many cells as possible while at the same time preserving function and minimizing scarring.