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Point-Of-Care Ultrasound Screening for Proximal Lower Extremity Deep Venous Thrombosis
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Clinical Course of Asymptomatic Isolated Distal Deep Vein Thrombosis of the Leg: A Single-Institution Study

Nobuhiro Shimabukuro1, Makoto Mo1, Naoki Hashiyama1

  • 1Department of Cardiovascular Surgery, Yokohama Minami Kyosai Hospital, Yokohama, Kanagawa, Japan.

Annals of Vascular Diseases
|January 17, 2020
PubMed

Insights

Asymptomatic isolated distal deep vein thrombosis (DVT) generally shows a good prognosis. Most patients did not experience recurrence or extension, suggesting routine anticoagulation may not be necessary.

Area of Science:

  • Vascular Medicine
  • Phlebology
  • Diagnostic Ultrasound

Background:

  • The clinical course of asymptomatic isolated distal deep vein thrombosis (DVT) remains poorly understood.
  • Distal DVT is diagnosed using sonography, but its natural history without anticoagulant treatment requires further investigation.

Purpose of the Study:

  • To elucidate the 3-month and 1-year clinical outcomes for patients diagnosed with asymptomatic isolated distal DVT of the leg.
  • To evaluate the recurrence and extension rates of distal DVT in patients not receiving anticoagulant therapy.

Main Methods:

  • Retrospective evaluation of 127 patients with asymptomatic, sonographically confirmed isolated distal DVT.
  • Patients did not receive anticoagulant therapy and were followed for 3 months and 1 year with serial sonographic examinations.

Main Results:

  • No venous thromboembolism recurrence was observed in any patient during the follow-up period.
  • Thrombus extension to proximal veins was confirmed in only 2 out of 43 patients who underwent repeat ultrasound.

Conclusions:

  • Asymptomatic isolated distal DVT of the leg demonstrates a favorable prognosis.
  • Uniform anticoagulation therapy is likely unnecessary for this patient group, supporting a conservative management approach.

Keywords:
anticoagulant therapyasymptomaticdeep vein thrombosisisolated distal deep thrombosis

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