| LITA | left internal thoracic artery |
|---|---|
| LMCAD | left main coronary artery disease |
| LMS | lateral medullary syndrome; left main stem [coronary artery]; leiomyosarcoma; Licentiate in Medicine... |
| LPA | latex particle agglutination; left pulmonary artery; lysophosphatidic acid |
| LAA | left atrial appendage; left atrial area; leukemia-associated antigen; leukocyte ascorbic acid |