Two Cases of Vitiligo Developed on the Persisting Dermal Melanocytosis: Is There a Difference between Epidermal Melanocytes and Dermal Melanocytes?
A 23-year-old man presented with a four-year history of extensive depigmented patches. These lesions overlapped with bluish patches which had been present since the age of three (). There was no significant past medical and familial history. The laboratory tests were within the normal range. A biopsy specimen was obtained from the border of the vitiliginous patch that overlapped the bluish patches. The histopathology showed dermal melanocytes with the loss of epidermal melanocytes (). There was no inflammatory cell infiltrate at the dermalepidermal junction or in the dermis.