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histiocytosisenUK
his·ti·o·cy·to·sis H0217450 (hĭs′tē-ō′sī-tō′sĭs)n. pl. his·ti·o·cy·to·ses (-sēz) Any of several diseases characterized by the abnormal proliferation of histiocytes in the tissues or organs.Thesaurus| Noun | 1. | histiocytosis - a blood disease characterized by an abnormal multiplication of macrophagesblood disease, blood disorder - a disease or disorder of the bloodHand-Schuller-Christian disease, Schuller-Christian disease - inflammatory histiocytosis associated with disturbance of cholesterol metabolism; occurs chiefly in young children and is characterized by cystic defects of the skull and diabetes insipidus |
TranslationshistiocytosisenUK
histiocytosis[‚his·tē·ō‚sī′tō·səs] (medicine) Abnormal proliferation of histiocytes, especially in hematopoietic tissues. histiocytosisenUK
histiocytosis [his″te-o-si-to´sis] a condition marked by the abnormal appearance of histiocytes in the blood.Langerhans cell histiocytosis a generic term that encompasses a group of disorders characterized by proliferation of Langerhans cells, which are specialized cells found in the epidermis that function as part of the immune system. These disorders are believed to arise from disturbances in regulation of the immune system. Children are more often affected than adults, and the bone marrow, endocrine system, and lungs may be involved (the lungs are affected more commonly in adults than in children). Langerhans cell histiocytosis is divided into unifocal and multifocal variants; there is also an acute, disseminated form (letterer-siwe disease). This group of disorders was formerly called histiocytosis X and was classified in three forms: Letterer-Siwe disease, Hand-Schüller-Christian disease, and eosinophilic granuloma. Called also eosinophilic granuloma, eosinophilic granulomatosis, and Langerhans cell granulomatosis. Langerhans cell histiocytosis, acute disseminated Letterer-Siwe disease.Langerhans cell histiocytosis, multifocal Langerhans cell histiocytosis occurring as erosive accumulations of proliferating Langerhans cells. It occurs most commonly in the marrow cavities of bones, but may also affect the skin, gingiva, lungs, and stomach. When the triad of involvement of the bones of the skull, exophthalmos, and diabetes insipidus is present, it is referred to as Hand-Schüller-Christian disease.Langerhans cell histiocytosis, unifocal Langerhans cell histiocytosis occurring as a single osteolytic lesion, usually in a long or flat bone; it may be asymptomatic or may produce bone pain, tenderness, and swelling and, sometimes, pathologic fracture.histiocytosis X former name for Langerhans cell histiocytosis.his·ti·o·cy·to·sis (his'tē-ō-sī-tō'sis), A generalized proliferation of histiocytes. Synonym(s): histocytosishistiocytosis (hĭs′tē-ō′sī-tō′sĭs)n. pl. histiocyto·ses (-sēz) Any of several diseases characterized by the abnormal proliferation of histiocytes in the tissues or organs.his·ti·o·cy·to·sis (his'tē-ō-sī-tō'sis) A generalized multiplication of histiocytes.
Synonym(s): histocytosis. histiocytosis One of several disorders in which HISTIOCYTES occur in abnormal numbers, in localized areas, without any of the usual causes, such as infection. Histiocytosis LESIONS may be single or multiple. The condition is also known as histiocytosis X.histiocytosisenUK
Related to histiocytosis: sinus histiocytosis, malignant histiocytosis, Langerhans cell histiocytosisWords related to histiocytosisnoun a blood disease characterized by an abnormal multiplication of macrophagesRelated Words- blood disease
- blood disorder
- Hand-Schuller-Christian disease
- Schuller-Christian disease
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