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Non-bacterial thrombotic endocarditis (NBTE) typically affects patients with underlying adenocarcinoma, often of pancreatic origin. If untreated, it can lead to serious morbidity and mortality, including recurrent ischaemic stroke. NBTE is frequently missed or confused with infective endocarditis, leading to inappropriate management. We present the case of a 54-year-old male with newly diagnosed pancreatic malignancy (CA19–9 &amp;gt;120 000) who suffered recurrent deep-vein-thromboses and multiple ischaemic strokes despite full anticoagulation therapy. Transoesophageal echocardiography was correctly performed, but only after a second stroke was NBTE considered. We recommend early clinical suspicion and investigation for NBTE in patients with known or suspected malignancy presenting with neurological symptoms consistent with stroke. Initial calculations indicate this could also be cost-effective. Further, the patient’s significantly elevated tumour-markers and NBTE-severity raise the possibility of a link; if further research established a reliable relationship, routine surveillance of high-risk malignancies could identify patients who might benefit from earlier echocardiography and anticoagulation management.

Non-bacterial thrombotic endocarditis in pancreatic cancer and other high-risk malignancies: the case for prophylactic treatment