Medicine General 98759ea8 Vegetations on undersurface of A.V. valves are found in: A Acute Rheumatic corditis B Limban Sack's endocarditis C Non thrombotic bacterial endocarditis D Chronic rheumatic carditis High-Yield Explanation Answer is B (Libman Sacks Endocarditis) Vegetation on under-surface of AV valves are typically seen in Libman Sacks Endocarditis (SLE).