Atypical melanocytic lesions are also known as dysplastic nevus or dysplastic mole, atypical mole, or atypical melanocytic hyperplasia. Mole and nevus are synonymous. By definition these lesions are benign. However, since this terminology is based on either a visual inspection or a partial biopsy of the lesion, the real diagnosis may be something more serious. Complete lesion excision and examination under a microscope is needed.