Histiocytosis X
Now called Langerhans cell histiocytosis. This disease is subclassified into eosinophilic granuloma, Letterer Siwe disease, and Hand-Schuller-Christian disease.
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- Histiocytosis, Hand-Schuller-Christian
A disease in which histiocytes start to multiply and attack the tissues or organs of the patient. The disease usually affects children age 2 to 5, less often older children and adults. The most frequent sites of bony involvement are the flat bones of the skull, ribs, pelvis, and scapula (wing bone). Chronic otitis media […]
- Histiocytosis, Letterer Siwe
A severe disease in which histiocytes start to multiply and attack the tissues or organs of the patient starting in infancy with a scaly, sometimes itchy rash on the scalp, ears, abdomen, and creases of the neck and face. Raw skin may provide a portal of entry for germs, leading to sepsis (bloodstream infection). There […]
- Histiocytosis, Langerhans cell
Histiocytosis in which the active histiocytes normally occur in the skin. See histiocytosis.
- Histiocytosis, lipid
A form of histiocytosis that affects lipid (fat) storage. Also known as Niemann- Pick disease, Erdheim-Chester disease.
- Histiocytosis, malignant
A term sometimes used to refer to a group of tumors including monocyte-related leukemias (for example, acute monocytic leukemia, acute myelomonocytic leukemia), extramedullary monocytic tumor, and histiocytic sarcoma. Treatment is by radiation and chemotherapy, and in some cases bone-marrow transplantation. See also histiocytosis.