Oncology
Idiopathic Multicentric Castleman Disease (iMCD)
Overview
iMCD is a subset of Castleman disease involving multiple groups of enlarged lymph nodes in people who are human immunodeficiency virus (HIV) negative and human herpesvirus-8 (HHV-8) negative. It is a potentially life-threatening and difficult-to-diagnose condition that can hide in the shadows of other diseases. Patients can present with a range of nonspecific symptoms and laboratory abnormalities. Common clinical signs and symptoms of iMCD may include generalized lymphadenopathy, flu-like symptoms, fluid accumulation, and organomegaly. iMCD is a rare condition with approximately 1000 to 1100 cases diagnosed per year in the United States. It can affect a person regardless of their age, gender, or race. Although iMCD is a cytokine-driven disorder, the exact cause is unknown.