| anterior choroidal artery | <anatomy, artery> Origin, internal carotid or (rarely) middle cerebral artery; distribution, optic tract, crus cerebri, uncus, hippocampus, globus pallidus, posterior part of internal capsule, geniculate bodies of the thalamus, and choroid plexus in the inferior horn of the lateral ventricle. Synonym: arteria choroidea anterior. (05 Mar 2000) |
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| central areolar choroidal atrophy | A slowly progressive pigmentary degeneration in young persons; characterised by black foci closely set together and coalescent at the posterior pole and macular region. Synonym: central areolar choroidal atrophy, central areolar choroidal sclerosis. (05 Mar 2000) |
| central areolar choroidal sclerosis | A slowly progressive pigmentary degeneration in young persons; characterised by black foci closely set together and coalescent at the posterior pole and macular region. Synonym: central areolar choroidal atrophy, central areolar choroidal sclerosis. (05 Mar 2000) |
| choroidal | Relating to the choroid (choroidea). (05 Mar 2000) |
| choroidal fissure | The narrow cleft along the medial wall of the lateral ventricle along the margins of which the choroid plexus is attached; it lies between the upper surface of the thalamus and lateral edge of the fornix in the central part of the ventricle and between the terminal stria and fimbria hippocampi in the inferior horn. Synonym: fissura choroidea. (05 Mar 2000) |
| choroidal ring | A lightly pigmented crescent or ring adjacent to the optic disk. (05 Mar 2000) |
| choroidal vascular atrophy | Atrophy affecting either all choroidal vessels or only the choriocapillaris, occurring either diffusely or confined to the posterior pole of the eye. (05 Mar 2000) |
| posterior choroidal artery | <anatomy, artery> One of several choroid branches of the P2 segment of the posterior cerebral artery that supply the choroid plexus of the body of the lateral ventricle and of the third ventricle. Synonym: arteria choroidea posterior. (05 Mar 2000) |
| progressive choroidal atrophy | An x chromosome-linked abnormality characterised by atrophy of the choroid and degeneration of the retinal pigment epithelium causing night blindness. (12 Dec 1998) |
| pericardial effusion | <cardiology> A collection of fluid or blood in the pericardial space (inside the pericardial sac) around the heart. Some causes include congestive heart failure, cancer and autoimmune disease. (27 Sep 1997) |
| pericarditis with effusion | Pericardial inflammation producing excess pericardial fluid. (05 Mar 2000) |
| pleural effusion | A collection of fluid (or blood) in the pleural space (in one side of the chest cavity around the lung). May be secondary to trauma, cancer, nephrotic syndrome, kidney disease, pancreatitis, congestive heart failure and cirrhosis. See: pleural space. (27 Sep 1997) |
| pleural effusion in newborn | <radiology> Chylothorax most common cause of large effusion, erythroblastosis foetalis, Turner syndrome, congestive heart failure, infantile polycystic kidneys, wet-lung disease, hypervolaemia (idiopathic or iatrogenic), oesophageal tear, enteric cyst, obstructed pulmonary veins (12 Dec 1998) |
| pleural effusion, malignant | Presence of fluid in the pleural cavity as a complication of malignant disease. Malignant pleural effusions often contain actual malignant cells. (12 Dec 1998) |
| pleurisy with effusion | Pleurisy accompanied by serous exudation. Synonym: serous pleurisy, wet pleurisy. (05 Mar 2000) |