Yield of ultrasonography in patients with or without post-thrombotic syndrome for diagnosis of suspected recurrent ipsilateral deep vein thrombosis.

A total of 452 patients with a symptomatic proximal DVT were included. During follow-up, there were 144 suspicions of recurrent ipsilateral DVT, which were confirmed in 38 patients (26.4%). The confirmation rate of recurrent ipsilateral DVT was 25.6% (23/90) in patients without PTS as compared with 27.8% (15/54) in patients with PTS (P = .84). Our study supports a similar yield of ultrasonography to diagnose recurrent ipsilateral DVT in patients off anticoagulation therapy with or without PTS as defined by 5 or more points on the Villalta scale.