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Images 11.24.1A: Nodular dermatosis + 11.24.1B: Foamy histiocytes in a papule = Xanthoma  A xanthoma differs from a xanthogranuloma by being made up of a nearly pure population of foamy histiocytes, practically none of which are multinucleate, and by the absence of accompanying lymphocytes, plasma cells, eosinophils, and neutrophils. The presence of fibroplasia is not […]