What is the classic electron microscope finding seen in Langerhans cell histiocytosis?
Birbeck granules
What are the 3 main subtypes of Langerhans cell histiocytosis?
Letterer-Siwe disease, Hand-Schüller-Christian disease, and eosinophilic granulomas.
There is an expansile 6 cm osteolytic lesion in the metaphysis of the left femur resulting in cortical thinning with adjacent periostitis.