Adult Pulmonary Langerhans Cell Histiocytosis with Osseous Involvement: understanding this rare mimic of malignancy

Langerhans cells are dendritic that form the antigenic barrier of human body. They occur in nearly any tissue but most prevalent skin, submucosa bronchial tree, and other mucosae. Cell Histiocytosis (LCH) develops when these damage tissues which they reside through a combination inflammatory monoclonal stimulation. The pulmonary variant LCH involves lung parenchyma creates wide variety disturbances: hypertension both obstructive restrictive disease. Osseous involvement, addition to variant, presents with masses lytic bone lesions, sparks suspicion for malignancy. Early recognition this rare pathology is important as early treatment clinically beneficial. following explores case adult Pulmonary osseous involvement.