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Hypercoagulable state testing and malignancy screening following venous thromboembolic events

Departments of Hematology and Medical Oncology and Cardiovascular Medicine, The Cleveland Clinic Foundation, Cleveland, OH, USA, deitchs{at}ccf.org

Marcelo PV Gomes

Department of Cardiovascular Medicine, The Cleveland Clinic Foundation, Cleveland, OH, USA

Mounting interest in hypercoagulability, increased availability of hypercoagulable state test ‘panels’ and enhanced ability to identify abnormalities in tested patients have prompted widespread testing. Testing for acquired and inherited hypercoagulable states uncovers an abnormality in over 50% of patients presenting with an initial venous thromboembolic event (VTE) but may have minimal actual impact on management in most of these patients. Such laboratory screening should be reserved for patients in whom the results of individual tests will signifi cantly impact the choice of anticoagulant agent, intensity of anticoagulant therapy, therapeutic monitoring, family screening, family planning, prognosis determination, and most of all duration of therapy. Testing ‘just to know’ is neither cost-effective nor clinically appropriate. The most important testing in patients following acute VTE may be ageand gender-specifi c cancer screening. Cancer screening following VTE seems most prudent in older individuals and in those with idiopathic VTE and no laboratory evidence for an inherited hypercoagulable state. Cancer screening should focus on identifi cation of treatable cancers and those where diagnosis in an early stage favorably impacts patient survival. Extensive searches for occult malignancy employing whole-body computed tomography and serum tumor markers may identify more cancers but without affecting patient outcome. We advocate that physicians should focus their attention more on VTE prophylaxis and proper treatment and less on costly and, at times, invasive testing of questionable value.

Key Words: cancer • diagnosis • hypercoagulable states • laboratory testing • screening • venous thrombosis

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