A 59-year-old man presented with a five-year history of an asymptomatic widespread truncal rash. Cutaneous biopsies showed mastocytosis, which was shown to be CD4-positive immunohistochemically. This potential diagnostic pitfall in the discrimination of mastocytosis from a variety of other haematopoietic neoplasms, particularly mycosis fungoides, is discussed.
Statistics from Altmetric.com
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.
Competing interests: None.
Patient consent: Obtained.