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Langerhans cell histiocytosis (LCH) is an abnormal clonal proliferation of Langerhans cells, abnormal cells deriving from bone marrow and capable of migrating from skin to lymph nodes. Symptoms range from isolated bone lesions to multisystem disease . [ 1 ]
In 1987, the Histiocyte Society published their classification of the histiocyte disorders together with criteria for diagnosis and clinical assessment of Langerhans cell histiocytosis. [10] Hand–Schüller–Christian disease is now considered a subtype of LCH, chronic multifocal Langerhans cell histiocytosis. [3]
Letterer–Siwe disease, (LSD) or Abt-Letterer-Siwe disease, is one of the four recognized clinical syndromes of Langerhans cell histiocytosis (LCH) and is the most severe form, involving multiple organ systems such as the skin, bone marrow, spleen, liver, and lung. Oral cavity and gastrointestinal involvement may also be seen.
According to the Histiocytosis Association, 1 in 200,000 children in the United States are born with histiocytosis each year. [2] HAA also states that most of the people diagnosed with histiocytosis are children under the age of 10, although the disease can afflict adults. The disease usually occurs from birth to age 15. [3]
1 Symptoms. 2 Diagnosis. 3 Treatment. 4 ... Congenital self-healing reticulohistiocytosis is a condition that is a self-limited form of Langerhans cell histiocytosis ...
The differential diagnosis of Destombes–Rosai–Dorfman disease includes both malignant and nonmalignant diseases, such as granulomatosis with polyangiitis, Langerhans cell histiocytosis, Langerhans cell sarcoma, lymphoma, sarcoidosis, IgG4-related disease, and tuberculosis. [1] The disease is diagnosed by biopsy of affected tissues.
Human eosinophilic granuloma is characterized by abnormal proliferation of Langerhans cells (LCs). LCs are antigen-presenting cells derived from dendritic cells. In humans, eosinophilic granulomas are considered as a benign tumors that occurs mainly in children and adolescents. EG is a quite rare condition, and its incidence is higher in white ...
Langerhans cell is represented by a yellow oval; blue arrows correspond to is_a relations, and orange arrows correspond to develops_from relations. Only a subset of Langerhans cell parent types are included in the figure. [1] A Langerhans cell (LC) is a tissue-resident macrophage of the skin [2] once thought to be a resident dendritic cell. [3]