| glomus tumour | A blue-red, extremely painful paraganglioma involving a glomeriform arteriovenous anastomosis (glomus body), which may be found anywhere in the skin, most often in the distal portion of the fingers and toes, especially beneath the nail. They may also occur in the stomach and nasal cavity. It is composed of specialised pericytes (sometimes termed glomus cells), usually in single encapsulated nodular masses which may be several millimeters in diameter. When located in the usual subungual site, the abundant innervation makes the tumour exquisitely painful; when located elsewhere, the glomus tumour is painless. (12 Dec 1998) |
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| glomus tympanicum | <radiology> Paraganglioma of middle ear, most common neoplasm of middle ear, arises from tympanic branch of glossopharyngeal nerve, arterial supply: ascending pharyngeal artery, (arises at bifurcation: do CCA injection), glomus JUGULARE is most common tumour of temporal bone (12 Dec 1998) |
| choroid glomus | A marked enlargement of the choroid plexus of the lateral ventricle at the junction of the central part with the inferior horn. Synonym: glomus choroideum, choroid skein. (05 Mar 2000) |
| pulmonary glomus | A structure similar to the carotid body, found in relation to the pulmonary artery. Synonym: glomus pulmonale. (05 Mar 2000) |
| intravagal glomus | A minute collection of chemoreceptor cells on the auricular branch of the vagus nerve. A tumour of this glomus may cause deafness and tinnitus. Synonym: glomus intravagale. (05 Mar 2000) |
| jugular glomus | A microscopic collection of chemoreceptor tissue in the adventitia of the jugular bulb; a tumour of this glomus may cause paralysis of the vocal cords, attacks of dizziness, blackouts, and nystagmus. Synonym: glomus jugulare. (05 Mar 2000) |