Blue nevus with satellitosis mimicking malignant melanoma

Blue nevus rarely develops a malignant melanoma. The loss of the regular bo rder and the development of satellite lesions are ominous clinical indicato rs of the malignant change. A case is presented in which both of these clin ical features-irregular border and satellite lesions-were present, but no m alignant change was observed histopathologically. To our knowledge, such a single nodule with satellite lesions mimicking malignant melanoma has not b een described previously.