Diffuse normolipidemic plane xanthomas with monoclonal gammopathy presenting as urticarial plaques.
Diffuse normolipidemic plane xanthomas may be a harbinger of diseases of the reticuloendothelial system, including multiple myeloma, other paraproteinemias, leukemia, and lymphoma. We present an atypical case of diffuse normolipidemic plane xanthomas and monoclonal gammopathy.