Leukemia cutis masquerading as vitiligo.

Chronic myelomonocytic leukemia (CMML) is a hematologic stem cell disorder with myelodysplastic and myeloproliferative characteristics. Extramedullary leukemic infiltration of the skin, although uncommon in CMML, has prognostic relevance. We report a unique case of a patient with CMML who clinically presented with vitiligo that was histologically diagnosed as leukemia cutis. This case underscores the necessity of early recognition of skin changes in patients with hematologic disorders and the differentiation of nonspecific skin lesions from leukemia cutis.