| vascular fistula | <surgery> An abnormal passage in a blood vessel, between two or more arteries, or between an artery and a vein. (12 Dec 1998) |
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| vascular fold of the caecum | <anatomy> A peritoneal fold that arches over a branch of the ileocolic artery and bounds in front a narrow recess, the superior ileocaecal (or ileocolic) recess. Synonym: plica caecalis vascularis. (05 Mar 2000) |
| vascular gland | <anatomy> A lymphoid structure in which the blood sinuses are present in place of lymph sinuses; haemal node's occur in ruminants and some other mammals, but their presence in humans is questioned. Synonym: haemal gland, haemolymph gland, haemolymph node, vascular gland. (05 Mar 2000) |
| vascular headache | <neurology> A group of headaches felt to involve abnormal sensitivity of the blood vessels (arteries) in the brain to various triggers which results in rapid changes in the artery size due to spasm (constriction). Other arteries in the brain and scalp then open (dilate), and throbbing pain is perceived in the head. Migraine headaches are the most common type of vascular headache. (07 Mar 2000) |
| vascular keratitis | Superficial cellular infiltration of the cornea and neovascularization between Bowman's membrane and the epithelium. (05 Mar 2000) |
| vascular lacuna | <anatomy> The medial compartment beneath the inguinal ligament, for the passage to the femoral vessels; it is separated from the muscular lacuna by the iliopectineal arch. Synonym: lacuna vasorum. (05 Mar 2000) |
| vascular lamina of choroid | <anatomy> The outer portion of the choroid of the eye containing the largest blood vessels. Synonym: lamina vasculosa choroideae, Haller's vascular tissue, uvaeformis, vascular layer of choroid coat of eye, vascular layer. (05 Mar 2000) |
| vascular layer | <anatomy> The outer portion of the choroid of the eye containing the largest blood vessels. Synonym: lamina vasculosa choroideae, Haller's vascular tissue, uvaeformis, vascular layer of choroid coat of eye, vascular layer. (05 Mar 2000) |
| vascular layer of choroid coat of eye | <anatomy> The outer portion of the choroid of the eye containing the largest blood vessels. Synonym: lamina vasculosa choroideae, Haller's vascular tissue, uvaeformis, vascular layer of choroid coat of eye, vascular layer. (05 Mar 2000) |
| vascular leiomyoma | <tumour> A markedly vascular leiomyoma, apparently arising from the smooth muscle of blood vessels. Synonym: angioleiomyoma, angiomyofibroma, angiomyoma. (05 Mar 2000) |
| vascular meninx | <anatomy> Rarely used term for pia mater. Synonym: meninx vasculosa. (05 Mar 2000) |
| vascular murmur | <cardiology> A murmur originating in a blood vessel. (05 Mar 2000) |
| vascular neoplasms | <oncology> Neoplasms located in vascular tissue or specific veins. They are differentiated from neoplasms, vascular tissue which are neoplasms composed of vascular tissue, such as angiofibroma or haemangioma. (12 Dec 1998) |
| vascular nerve | <anatomy, nerve> A small nerve filament that supplies the wall of a blood vessel. Synonym: nervus vascularis. (05 Mar 2000) |
| vascular occlusion | A sudden blockage of a blood vessel usually with a blood clot. Blockage of a vein results in deep venous thrombosis. Blockage of an artery results in a surgical emergency. (27 Sep 1997) |