A case of pedunculated xanthogranuloma in the upper eyelid margin of an adult

We have recently experienced a case of xanthogranuloma in an adult, presenting as a round, pedunculated mass on the upper eyelid. Laboratory findings, including blood lipid substances such as cholesterol and triglycerides, were within normal limits. Furthermore, we could not find any extracutaneous manifestations. However, histopathologic findings revealed granulomatous infiltrates containing foamy cells, foreign body giant cells, Touton giant cells, as well as histiocytes and lymphocytes. Differential diagnosis with necrobiotic xanthogranuloma and Erdheim-Chester disease is essential when the lesion is observed in the periocular area, and additional systemic evaluation and regular follow-up examination are required.