| LSA | Left Subclavian Artery |
|---|---|
| LSA | left sacro-anterior [fetal position]; left subclavian artery; leukocyte-specific activity; lichen sclerosus et atrophicus; lymphosarcoma |
| LSA | Last Spontaneous Abortion |
| LSA/RCS | lymphosarcoma-reticulum cell sarcoma |
| LSANA | leukocyte-specific antinuclear antibody |