| histiocytosis, non-langerhans-cell | Group of disorders which feature accumulations of active histiocytes and lymphocytes, but where the histiocytes are not langerhans cells. The group includes haemophagocytic lymphohistiocytosis, infection-associated haemophagocytic syndrome, sinus histiocytosis, xanthogranuloma, reticulohistiocytoma, juvenile xanthoma, xanthoma disseminatum, as well as the lipid storage diseases (sea-blue histiocyte syndrome and niemann-pick disease). (12 Dec 1998) |
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| histiocytosis, sinus | Benign, non-langerhans-cell, histiocytic proliferative disorder that primarily affects the lymph nodes. It is often referred to as sinus histiocytosis with massive lymphadenopathy. (12 Dec 1998) |
| histiogenic | Formed by the tissues; e.g., the histogenous cells in an exudate arising from proliferation of the fixed tissue cells. Synonym: histiogenic. Origin: histo-+ G. -gen, producing (05 Mar 2000) |
| histioid | 1. Resembling in structure one of the tissues of the body. 2. Sometimes used with reference to the histologic structure of a neoplasm derived from and consisting of a single, relatively simple type of neoplastic tissue that closely resembles the normal, as in certain fibromas and leiomyomas. Synonym: histioid. Origin: histo-+ G. Eidos, resemblance (05 Mar 2000) |
| histiology | <study> Same as Histology. Origin: Gr. "istos tissue. Source: Websters Dictionary (01 Mar 1998) |
| histioma | <oncology, tumour> A histoma is any tumour which was derived from mature tissue. (09 Oct 1997) |
| histionic | Relating to any tissue. (05 Mar 2000) |