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Fine‐needle cytology of cutaneous juvenile xanthogranuloma and langerhans cell histiocytosis

In pediatric patients, a cutaneous nodule is usually diagnosed by performing an excisional biopsy, but fine‐needle cytology (FNC) is a safer and noninvasive diagnostic method widely used to obtain diagnostic specimens with little stress to the patient. The authors compared the ability of FNC and biopsy to differentiate Langerhans cell histiocytosis (LCH) from juvenile xanthogranuloma (JXG).