| angiofibroma | <oncology, tumour> A benign tumour of the posterior nasopharynx that is most common in adolescent boys. Symptoms repeated epistaxis, nasal congestion, nasal discharge and hearing loss. A skull X-ray or a CT scan of the head can confirm the presence of an angiofibroma. Treatment may include the surgical removal of the lesion if it is enlarging or blocking the airway. (27 Sep 1997) |
|---|---|
| angiofibrosis | Fibrosis of the walls of blood vessels. (05 Mar 2000) |
| angiofollicular mediastinal lymph node hyperplasia | Solitary masses of lymphoid tissue containing concentric perivascular aggregates of lymphocytes, occurring usually in the mediastinum or hilar region of young adults; similar changes have been reported outside the mediastinum and, if associated with interfollicular sheets of plasma cells, may progress to lymphoma or plasmacytoma. Synonym: angiofollicular mediastinal lymph node hyperplasia, Castleman's disease. (05 Mar 2000) |
| angiofraphy | <anatomy> A description of blood vessels and lymphatics. Origin: Angio-: cf. F. Angiographie. Source: Websters Dictionary (01 Mar 1998) |
| angiogenesis | The process of vascularisation of a tissue involving the development of new capillary blood vessels. (18 Nov 1997) |
| angiogenesis factor | Substance causing proliferation of new blood vessels. It is found in tissues with high metabolic requirements, such as the retina, and in certain cancers. The factor is also released by hypoxic macrophages at the edges or outer surfaces of wounds and initiates revascularization in wound healing. (12 Dec 1998) |
| angiogenic | 1. Relating to angiogenesis. 2. Of vascular origin. (05 Mar 2000) |
| angiogenin | <protein> Polypeptide (14 kD) that induces the proliferation of endothelial cells, one of the components of tumour angiogenesis factor. It has sequence homology with pancreatic ribonuclease and has ribonucleolytic activity, although the biological relevance of this is unclear. (18 Nov 1997) |
| angioglioma | <tumour> A mixed glioma and angioma. (05 Mar 2000) |
| angiogliomatosis | Occurrence of multiple areas of proliferating capillaries and neuroglia or a condition of multiple angiogliomas. (05 Mar 2000) |
| angiogliosis | Glial scarring about a blood vessel or a condition of multiple angiogliomas. (05 Mar 2000) |
| angiogram | <investigation> A diagnostic procedure done in the X-ray department to visualize blood vessels following introduction of a contrast material into an artery. (16 Dec 1997) |
| angiographic | Relating to or utilizing angiography. (05 Mar 2000) |
| angiography | <investigation> A radiographic technique where a radio-opaque (shows up on X-ray) contrast material is injected into a blood vessel for the purpose of identifying its anatomy on X-ray. This technique is used to image arteries in the brain, heart, kidneys, gastrointestinal tract, aorta, neck (carotids), chest, limbs and pulmonary circuit. (27 Sep 1997) |
| angiography catheter | A thin-walled tube suitable for percutaneous puncture and powered injection of contrast media for radiography; catheter diameter is measured on the French scale. (05 Mar 2000) |