Nonbacterial thrombotic endocarditis as a paraneoplastic manifestation of newly diagnosed splenic large B cell lymphoma

Transthoracic echocardiography revealed small oscillating vegetations on aortic cusps without aortic regurgitation and small vegetations on mitral leaflets with mild mitral regurgitation. Due to the unexplained moderate-to-severe thrombocytopenia, which was refractory to platelet transfusion, a bone marrow biopsy revealed a normocellular marrow with myelodysplasia of erythroid and megakaryocyte lineage and a smear result of the increased proportion of plasma cells. [...]we report the first case of the treatment-naïve splenic large B cell lymphoma with NBTE as the paraneoplastic manifestation.