Stages of LCH
Key Points for This Section
LCH is described as single-system disease or multisystem disease, depending on how many body systems are affected:
- Single-system LCH: LCH is found in one part of an organ or body system (unifocal) or in more than one part of that organ or body system (multifocal).
- Multisystem LCH: LCH occurs in two or more organs or body systems.
LCH may affect low-risk organs or high-risk organs, depending on where it occurs in the body:
- Low-risk organs include the skin, bone, lymph nodes, gastrointestinal tract, pituitary gland, and central nervous system (CNS).
- High-risk organs include the liver, spleen, and bone marrow.