Hemophagocytic lymphohistiocytosis of the ocular adnexal mimicking orbital cellulitis in a patient with unknown X-linked lymphoproliferative syndrome type 1 (XLP1): Case report and literature review. - Laezza MP; Passaro ML; Matarazzo F; D'Aponte A; Piscopo R; Mariniello G; Strianese D (Saudi journal of ophthalmology : official journal of the Saudi Ophthalmological Society, 2025)