Erdheim-Chester disease: A multisystem non-Langerhans cell histiocytosis with cutaneous involvement
{{output}}
Erdheim-Chester disease (ECD) is a rare non-Langerhans cell histiocytosis (LCH) marked by systemic involvement and diverse clinical manifestations. We report a 35-year-old man with yellowish-brown periorbital lesions initially diagnosed as xanthelasma, which l... ...