Histopathology confirmed xanthogranulomatous infiltration with foamy histiocytes and Touton giant cells, with immunohistochemistry showing CD68-positive, CD163-positive, CD1a-negative, and S100-negative cells lacking Birbeck granules, consistent with non-Langerhans cell histiocytosis. Here, CD1A is linked to Langerhans cell histiocytosis.