Persistent asymptomatic plaques on the thigh of a child

Abstract

An 8yearold boy with no significant past medical history presented with two asymptomatic, slowly growing plaques located on his left anterior thigh that had been present for 6 weeks. No prior trauma or other possible triggers were reported. Physical examination revealed two welldefined, slightly infiltrated, erythematous to violaceous annular plaques, with slightly raised edges and clearer center, with no scaling (Figure 1). Pictures of the onset of the lesions were provided by the patient s parents and showed similar appearance. General examination was normal. Blood cell count was only significant for eosinophilia 1490/μL (reference range 100600/μL). A punch biopsy was taken (Figures 2 and 3). WHAT IS THE DIAGNOSIS?