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Thromb Res. 2012 Apr;129 Suppl 1:S16-9. doi: 10.1016/S0049-3848(12)70010-5.

Unsuspected pulmonary embolism in patients with cancer.

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Department of Internal Medicine, Hospital Sant Jaume, Olot, Gerona, Spain.



The natural history of unsuspected pulmonary embolism (PE) in patients with cancer has not been thoroughly studied.


We used the RIETE Registry data to compare the clinical characteristics, treatment strategies and outcome in cancer patients with unsuspected PE and in those presenting with symptomatic, acute PE.


Up to December 2011, 78 cancer patients with unsuspected PE and 1,994 with symptomatic PE had been enrolled. Patients with unsuspected PE more likely had colorectal cancer than those with symptomatic PE (28% vs. 13%), and less likely had prostate (3.8% vs. 10%) or hematologic (1.3% vs. 6.4%) cancer, or prior venous thromboembolism (3.8% vs. 12%). While the patients were receiving anticoagulant therapy, the incidence of PE recurrences (0% vs. 1.9%) or major bleeding (2.6% vs. 4.8%) were similar. After completion of anticoagulation, recurrent PE developed in 2.6% vs. 1.4% of patients, and major bleeding in 0% vs. 0.4%, respectively.


Our findings suggest that the clinical characteristics and outcome in cancer patients with unsuspected PE are quite similar to those in patients with symptomatic PE.

[Indexed for MEDLINE]

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