| gross lesion | A lesion plainly visible to the naked eye. (05 Mar 2000) |
|---|---|
| ring-wall lesion | A small ring haemorrhage in the brain that stimulates proliferation of a glial ring. (05 Mar 2000) |
| coin lesion of lungs | A solitary, round, circumscribed shadow found in the lung on chest radiograph; causes include granuloma, primary or metastatic carcinoma, benign tumour, vascular malformation. Synonym: coin lesion of lungs. (05 Mar 2000) |
| coin lesion, pulmonary | Solitary, round, circumscribed shadows found in the lungs in X-ray examinations. Common causes are tuberculosis, neoplasms, cysts, or vascular anomalies. (12 Dec 1998) |
| wire-loop lesion | Thickening of the basement membrane, with fibrinoid staining, of scattered peripheral capillaries in renal glomeruli; characteristic of renal involvement in systemic lupus erythematosus; the appearance of an affected capillary wall resembles a loop used in microbiology. (05 Mar 2000) |
| Councilman's lesion | An eosinophilic globule, seen in the liver in yellow fever, derived from necrosis of a single hepatic cell. Synonym: Councilman's lesion. (05 Mar 2000) |
| precancerous lesion | A noninvasive lesion with a predictable likelihood of becoming malignant; e.g., actinic keratosis. (05 Mar 2000) |
| Hill-Sachs lesion | An irregularity seen in the head of the humerus following dislocation of the shoulder; caused by impaction of the head of the humerus against the edge of the glenoid. (05 Mar 2000) |
| single lucent skull lesion | <radiology> Mnemonic: HELP ME, haemangioma, epidermoid / dermoid, leptomeningeal cyst, lambdoid suture defect, Paget's (osteoporosis circumscripta), post-surgical, metastasis (solitary), eosinophilic granuloma, encephalocele (12 Dec 1998) |
| solid lesion of spleen | <radiology> Granulomatous disease, most often TB and histoplasmosis, less often sarcoid, metastasis, melanoma, lymphoma, breast, lung, primary mass, haemangioma, haemangiosarcoma, lymphangioma, infarction (12 Dec 1998) |
| squamous intraepithelial lesion | A general term for the abnormal growth of squamous cells on the surface of the cervix. The changes in the cells are described as low grade or high grade, depending on how much of the cervix is affected and how abnormal the cells are. Also called sil. (12 Dec 1998) |
| dark t2 lesion | <radiology> (short T2), acute haemorrhage (deoxyHb), haemosiderin, physiologic iron (basal ganglia, etc.), mucinous lesions (?) most abnormalities have long T1 and T2 (dark/bright). Compare: bright T1 lesion. (07 Mar 2000) |
| supranuclear lesion | Injury to cerebral descending (corticonuclear) fibres above the brainstem or spinal motor nerve nucleus. Synonym: upper motor neuron lesion. (05 Mar 2000) |
| Dreulofoy's lesion | An abnormally large submucosal artery located in the proximal stomach that may be the site of acute and recurrent episodes of massive haemorrhage. (05 Mar 2000) |
| Duret's lesion | Small haemorrhage(s) in the floor of the fourth ventricle or beneath the aqueduct of Sylvius. (05 Mar 2000) |