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Biopsy findings of necrobiotic xanthogranuloma (NXG) and adult-onset xanthogranuloma (AXG). A, Photomicrograph of patient 2 showing typical features of NXG, namely, granulomas with histiocytes containing lipid pallisading around areas of necrobiotic collagen. B, Photomicrograph of patient 4 showing AXG findings of lipogranulomatous inflammation with Touton-type giant cells and fibrosis.
