Question: How to diagnose Multicentric Castleman Disease ?
Answer: How is multicentric Castleman disease diagnosed? The signs and symptoms of multicentric Castleman disease (MCD) are often nonspecific and blamed on other, more common conditions. However, if MCD is suspected, the following tests may be recommended to help establish the diagnosis and rule out other conditions that cause similar features: Blood tests can be ordered to evaluate the levels of Interleukin-6 (IL-6) and other substances in the body, which can be elevated in people with MCD. They can also be helpful in ruling out other autoimmune conditions and infections that are associated with similar signs and symptoms Imaging studies (such as a CT scan, PET scan, MRI scan, and/or ultrasound) can help identify enlarged lymph node(s) and other health problems A biopsy of affected tissue, often a lymph node, is usually recommended to confirm the diagnosis
Source: GARD