This patient education session features Dr. XinXin Cao, a hematologist at Peking Union Medical College Hospital, an ECD referral care center. She talks about common histiocytic disorders, including Erdheim–Chester disease (ECD), Langerhans cell histiocytosis, and Rosai–Dorfman disease (RDD).
Dr. Cao explains why these rare diseases are hard to recognize, how they can affect many parts of the body, and the general ways doctors diagnose and treat them. This session is designed to help patients, families, and caregivers better understand histiocytic disorders and feel more informed and supported.
This video is part of our ongoing mission to raise awareness, offer support, and help advance research for people affected by Erdheim-Chester Disease.

