| LAC | La Crosse [virus]; lactase; left atrial circumflex [artery]; left atrial contraction; linguoaxiocerv... |
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| LE | lactate extraction; left ear; left eye; leukocyte elastase; leukoerythrogenic; live embryo; Long Eva... |
| LED | light-emitting diode; lowest emitting dose; lupus erythematosus disseminatus |
| LEF | leukokinesis-enhancing factor; lupus erythematosus factor; lymphoid-enhanced binding factor |
| LN | Lesch-Nyhan [syndrome]; lipoid nephrosis; Lisch nodule; low necrosis; lupus nephritis; lymph node |
| lupus superficialis | Skin disease in which there are red scaly patches, especially over the nose and cheeks. May be a symptom of systemic lupus erythematosus. (18 Nov 1997) |
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| lupus tuberculosus | Cutaneous tuberculosis with characteristic nodular lesions on the face, particularly about the nose and ears. Synonym: lupus tuberculosus, tuberculosis cutis luposa. (05 Mar 2000) |
| lupus verrucosus | A tuberculous skin lesion having a warty surface with a chronic inflammatory base seen on the hands in adults and lower extremities in children, with marked hypersensitivity to tuberculous antigens. See: postmortem wart. Synonym: lupus papillomatosus, lupus verrucosus, tuberculous wart, verrucous scrofuloderma. (05 Mar 2000) |
| lupus vulgaris | Cutaneous tuberculosis with characteristic nodular lesions on the face, particularly about the nose and ears. Synonym: lupus tuberculosus, tuberculosis cutis luposa. (05 Mar 2000) |