ISM / SCIENCE PHOTO LIBRARY ISM / SCIENCE PHOTO LIBRARY
X-ray in front view of the pelvis of a patient, showing Langerhans cell histiocytosis (LCH) damaging the neck of the femur hip bone (at lower left). This condition is also known as eosinophilic granuloma. LCH is a disorder of the immune system characterised by an increase in histiocytes and these cells cause bone damage.
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