| EGC | early gastric cancer; epithelioid-globoid cell |
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| CGFH | congenital fibrous histiocytoma |
| MFH | malignant fibrous histiocytoma |
| EH | Epithelioid Hemangioendothelioma |
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| EHE | Epithelioid hemangioendothelioma |
| ES | Epithelioid sarcoma |
| malignant fibrous histiocytoma | <tumour> A deeply situated tumour, especially on the extremities of adults, frequently recurring after surgery and metastasizing to the lungs; shows partial fibroblastic and histiocytic differentiation with a variable storiform pattern, myxoid areas, and giant cells. (05 Mar 2000) |
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| generalised eruptive histiocytoma | A rare recurring generalised eruption in adults of flesh coloured or erythematous papules remaining localised to the skin and consisting of dermal nodules of mononuclear histiocytes that do not stain for lipid. Synonym: nodular non-X histiocytosis. (05 Mar 2000) |
| histiocytoma | <tumour> A tumour composed of histiocytes. Origin: histio-+ G. Kytos, cell, + -oma, tumour (05 Mar 2000) |
| histiocytoma, fibrous | A tumour composed, wholly or in part, of cells with the morphologic characteristics of histiocytes and with various fibroblastic components. There are many variants and many names. Superficially located histiocytic lesions behave benignly but deep, benign histiocytomas may invade locally into surrounding tissue. Fibrous histiocytomas can occur anywhere in the body. Superficial lesions are always cured by simple excision; a wider margin of tissue should be obtained for deep, benign types. Local recurrence is uncommon. (12 Dec 1998) |
| hypothalamic histiocytoma | <radiology> Parasellar tumour, may not be able to differentiate from: suprasellar (optic nerve/chiasm) glioma, teratoma, kids with tumour usually have, diabetes insipidus, skeletal lesions of histiocytosis (12 Dec 1998) |
| fibrous histiocytoma | <tumour> A benign lung or bronchial lesion, often subpleural, sometimes multiple, which forms hyalinised connective tissue. Synonym: fibrous histiocytoma. (05 Mar 2000) |
| haemangioendothelioma, epithelioid | A tumour of medium-to-large veins, composed of plump-to-spindled endothelial cells that bulge into vascular spaces in a tombstone-like fashion. These tumours are thought to have "borderline" aggression, where one-third develop local recurrences, but only rarely metastasize. It is unclear whether the epithelioid haemangioendothelioma is truly neoplastic or an exuberant tissue reaction, nor is it clear if this is equivalent to kimura's disease (see angiolymphoid hyperplasia with eosinophilia). (12 Dec 1998) |
| nevus, epithelioid and spindle cell | A benign compound nevus occurring most often in children before puberty, composed of spindle and epithelioid cells located mainly in the dermis, sometimes in association with large atypical cells and multinucleate cells, and having a close histopathological resemblance to malignant melanoma. The tumour presents as a smooth to slightly scaly, round to oval, raised, firm papule or nodule, ranging in colour from pink-tan to purplish red, often with surface telangiectasia. (12 Dec 1998) |
| epithelioid | <anatomy> Like epithelium; as, epithelioid cells. Origin: Epithelium. Source: Websters Dictionary (01 Mar 1998) |
| epithelioid cell | <cell biology> In a general sense, a cell that has an appearance that is similar to that of epithelial cells: used specifically of the very flattened macrophages found in granulomas (e.g. In tubercular lesions). (18 Nov 1997) |
| epithelioid cell nevus | A benign, slightly pigmented or red superficial small skin tumour composed of spindle-shaped, epithelioid, and multinucleated cells that may appear atypical; most common in children, but also appearing in adults. Synonym: benign juvenile melanoma, epithelioid cell nevus, spindle cell nevus. (05 Mar 2000) |
| epithelioid cells | Characteristic cells of granulomatous hypersensitivity. They appear as large, flattened cells with increased endoplasmic reticulum. They are believed to be activated macrophages that have differentiated as a result of prolonged antigenic stimulation. Further differentiation or fusion of epithelioid cells is thought to produce multinucleated giant cells (giant cells). (12 Dec 1998) |
| leiomyoma, epithelioid | A relatively rare smooth muscle tumour found most frequently in the wall of the gastrointestinal tract, especially in the stomach. It is similar to other smooth muscle tumours but may become very large and haemorrhage and exhibit small cystic areas. Simple excision is almost always curative. (12 Dec 1998) |
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