| EGC | early gastric cancer; epithelioid-globoid cell |
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| BA | Bacillary angiomatosis |
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| EH | Epithelioid Hemangioendothelioma |
| EHE | Epithelioid hemangioendothelioma |
| ES | Epithelioid sarcoma |
| 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) |
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| 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) |
| angiomatosis | A condition characterised by multiple angiomas. Bacillary angiomatosis, an infection of immunocompromised patients by a newly recognised Rickettsial species Rochalimaea henselae, characterised by fever and granulomatous cutaneous nodules, and peliosis hepatis in some cases. Skin biopsy shows vascular proliferation and infiltration of vessel walls by neutrophils and clumps of organisms seen with Warthin-Starry silver staining. (05 Mar 2000) |
| angiomatosis, bacillary | An infectious bacterial disease characterised by cutaneous vascular lesions. It is caused by bartonella henselae and is seen in aids patients and other immunocompromised hosts. (12 Dec 1998) |
| cephalotrigeminal angiomatosis | <syndrome> A congenital syndrome consisting of nevus flammeus of the face, haemangiomas of the leptomeninges and choroid, and late glaucoma. It is often associated with intracranial calcification, mental retardation, contralateral hemiplegia, and epilepsy. (12 Dec 1998) |
| cerebroretinal angiomatosis | <radiology> Retinocerebellar angiomatosis, phakomatosis, autosomal dominant (variable penetrance), haemangioblastoma: most frequent cause of death, cerebellar (most common), also medullary and spinal, retinal angiomatosis (45%), renal cell carcinoma: 2nd most common cause of death, pheochromocytoma (17%), cortical renal cysts (75%), cysts in virtually any organ, renal/liver haemangioma/adenoma, pancreatic cystic neoplasms, isleT-cell tumours, paraganglioma (12 Dec 1998) |
| congenital dysplastic angiomatosis | Autosomal dominant angiomatosis in which there is dysplasia of the underlying tissues, sometimes with overgrowth of bone (Klippel-Trenaunay-Weber syndrome), or encephalotrigeminal angiomatosis (Sturge-Weber syndrome) in which there is an angioma in the distribution of one or more branches of the trigeminal nerve, with vascular anomalies and calcification of the cerebral cortex. (05 Mar 2000) |
| cutaneomeningospinal angiomatosis | <syndrome> Cutaneous angiomas, usually in a dermatomal distribution on the trunk, associated with vascular abnormality of the spinal cord and resulting neurologic symptoms. Synonym: cutaneomeningospinal angiomatosis. (05 Mar 2000) |
| oculoencephalic angiomatosis | An incomplete autosomal dominant form of Sturge-Weber syndrome, consisting of angiomas of the choroid and meninges only. Telangiectatic angiomatosis, disseminated capillary and venous vascular malformations of the cerebral hemispheres and leptomeninges, occurring in Sturge-Weber syndrome. (05 Mar 2000) |
| encephalotrigeminal angiomatosis | <syndrome> A congenital syndrome consisting of nevus flammeus of the face, haemangiomas of the leptomeninges and choroid, and late glaucoma. It is often associated with intracranial calcification, mental retardation, contralateral hemiplegia, and epilepsy. (12 Dec 1998) |
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