RÉSUMÉ
OBJECTIVE: Assessment of cancer screening in the context of venous thromboembolic disease (VTE) remains controversial. We tried to characterize a population at high risk of developing cancer among patients suffering from VTE. METHOD: We conducted a retrospective ancillary case-control study among patients with VTE who later had a positive diagnosis of cancer. We assessed the association of cancer with characteristic features of VTE and with the results for four biological markers. RESULTS: Our population included 142 patients (53% men, median age 71 years). Two years after VTE, 24 patients (17%) had cancer. Median values for D-dimers, fibrin monomers and SP-selectin were significantly higher among patients who developed cancer. Logistic regression enabled us to identify two parameters targeting patients with a high risk of cancer: bilateral venous thrombosis (OR: 4.41, 95%CI: 1.41-13.78, P=0.01) and D-dimers superior to 3.8 µg/mL (OR: 3.68, 95%CI: 1.36-9.94, P=0.01). The information provided by these two characteristics was additive; 58% of patients in our population who had both factors developed cancer. CONCLUSION: Bilateral venous thrombosis and D-dimers superior to 3.8 µg/mL are highly associated with carcinoma. This result requires a prospective validation. It could be useful in limiting the screening process to the population most at risk.