J. S. Ginsberg, MD; P. Brill-Edwards, MD; G. Agnelli, MD
To the Editor: The article by White and colleagues (1) addresses the clinical utility of duplex ultrasound for the diagnosis of venous thrombosis. Duplex ultrasound appears to be sensitive and specific for the diagnosis of proximal but not calf vein thrombosis in symptomatic outpatients. It is highly likely that the test will need to be repeated at least once (and possibly on several occasions) in such patients to exclude extending calf vein thrombosis. Thus, we agree with the authors' statement that one test may be cheaper than contrast venography; however, with the need for serial testing, the cost of the
Ginsberg JS, Brill-Edwards P, Agnelli G. Deep Vein Thrombosis and Duplex Ultrasound. Ann Intern Med. ;112:307–308. doi: 10.7326/0003-4819-112-4-307
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Published: Ann Intern Med. 1990;112(4):307-308.
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