| 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) |
|---|---|
| cold liver lesion | <radiology> Size for detection = 1-2 cm (3-cm deep lesions), primary tumour (haemangioma hot by Tc-RBCs), metastasis, inflammatory lesion (e.g., amebic abscess), degenerative disease, trauma, congenital lesion (solitary cyst or polycystic disease) see: liver-spleen scan (12 Dec 1998) |
| cold spleen lesion | <radiology> Infarction, lymphoma, haematoma, tumour, splenic artery aneurysm, pancreatic pseudocyst, variant, artifact, absent spleen, splenectomy, sickle cell disease, trauma see: liver-spleen scan (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) |
| hot liver lesion | <radiology> Vena cava (superior vena cava/IVC) obstruction, QUADRATE (anterior medial segment of left lobe), basilic vein injection most likely to be collaterals, Budd-Chiari syndrome, CAUDATE lobe, cirrhosis, focal nodular hyperplasia (FNH), haemangioma see also: liver-spleen scan (12 Dec 1998) |
| 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) |
| 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) |
| Janeway lesion | One of the stigmata of infectious endocarditis: irregular, erythematous, flat, painless macules on the palms, soles, thenar and hypothenar eminences of the hands, tips of the fingers, and plantar surfaces of the toes; rarely a diffuse rash. In acute endocarditis the lesions may be haemorrhagic or purple. (05 Mar 2000) |