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Keywords:

  • melanoma;
  • melanonychia;
  • multiple;
  • nail unit

Subungual melanoma commonly presents with solitary longitudinal melanonychia. Herein, we report the case of a patient with subungual melanoma who developed involvement of three digits by three independent primary melanomas. A 98-year-old male patient presented with a two-year history of longitudinal melanonychia on three different fingernails. Histopathologically, all three lesions were proved to be melanoma. To our knowledge, this is the first reported case in which three subungual melanomas developed in one patient. Our case indicates that that not all examples of multiple longitudinal melanonychia represent benign lesions.

Liu Y, Wang L. The rare occurrence of three subungual melanomas in one patient.