Which histological feature is characteristic of the 'Libman-Sacks' endocarditis seen in SLE?
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Correct answer: Small sterile vegetations on both valve leaflet surfaces
Libman-Sacks endocarditis involves small, verrucous, non-bacterial vegetations. They are unique because they can develop on the undersurfaces of the valves, the chordae tendineae, or the endocardial surfaces.
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