What percentage of patients with isolated upper‑extremity deep‑vein thrombosis develop a concurrent pulmonary embolism?

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Last updated: February 25, 2026 • View editorial policy

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Upper Extremity DVT and Concurrent Pulmonary Embolism

Upper extremity deep vein thrombosis is associated with pulmonary embolism in approximately 9–36% of cases, with the most recent high-quality data suggesting rates closer to 9–11.5%, substantially lower than the 30–50% PE rate seen with lower extremity DVT. 1, 2

Incidence Rates from Clinical Studies

The reported PE rates with upper extremity DVT vary across studies but cluster around specific ranges:

  • 9% objectively confirmed PE rate in a 2012 study of 94 consecutive UEDVT patients at an academic medical center 1
  • Up to 36% PE complication rate reported in earlier systematic reviews and observational studies 3, 4
  • 1% PE rate in a 2011 series of 200 UEDVT patients, though this likely underestimates true incidence due to lack of systematic screening 5
  • Up to 40% PE association when all upper extremity locations are included (subclavian, axillary, brachial), though this represents the upper bound 6

The European Society of Cardiology guidelines specifically note that brachial DVT carries approximately 11.5% PE risk, which is substantially lower than proximal lower extremity DVT (67–77% PE risk). 2, 6

Critical Context: Why the Wide Range?

The variation in reported PE rates reflects several methodological factors you must understand:

  • Systematic imaging vs. symptomatic detection: Studies using routine chest imaging find higher PE rates (up to 36%) compared to those detecting only symptomatic PE (9%) 1, 3, 4
  • Anatomic location matters: Proximal upper extremity thrombosis (subclavian/axillary) carries higher PE risk than distal (brachial) thrombosis 2
  • Era of study: Older studies (1999–2001) reported higher rates (36%) before modern catheter care protocols 3, 4
  • Most recent data (2010–2012) consistently show 9–11.5% rates when objectively confirmed PE is the endpoint 1, 2

Comparison to Lower Extremity DVT

Understanding the relative risk helps frame clinical decision-making:

  • Lower extremity proximal DVT: 67–77% PE rate (pelvic/iliac involvement) 6
  • Lower extremity thigh DVT: 67% PE rate 6
  • Lower extremity calf DVT: 46% PE rate 6
  • Upper extremity DVT: 9–36% PE rate, with modern data favoring 9–11.5% 1, 2

The American Society of Hematology acknowledges this lower PE risk by establishing less conservative diagnostic thresholds for upper extremity DVT (≤5% false negative rate acceptable) compared to lower extremity DVT (≤2% false negative rate). 7

Clinical Risk Factors That Increase PE Likelihood

Not all upper extremity DVTs carry equal PE risk. Higher rates occur with:

  • Central venous catheters present in 93% of UEDVT cases, particularly when combined with cancer (48% of UEDVT patients) 1
  • Multiple venous segment involvement (subclavian + axillary + brachial) independently predicts both anticoagulation decisions and likely PE risk 5
  • Acute thrombosis on duplex imaging rather than chronic changes 5
  • Younger patient age correlates with more aggressive thrombosis 5

Mortality and Morbidity Considerations

The 1-month mortality rate for UEDVT is 6.4%, with most deaths related to underlying conditions (cancer, critical illness) rather than PE itself. 1

  • Two patients (1%) in one series died from intracranial bleeding on anticoagulation, highlighting that treatment risks may exceed PE risks in some patients 5
  • Recurrent VTE rates at 3 years are similar between upper and lower extremity DVT (15–18%), suggesting the thrombotic tendency persists regardless of initial location. 8

Practical Management Algorithm

1. Initiate anticoagulation immediately for documented UEDVT when no contraindications exist, following the same urgency as lower extremity proximal DVT despite lower PE risk 2

2. Do NOT routinely order chest imaging to screen for PE in asymptomatic UEDVT patients, as the 9–11.5% rate does not justify universal screening and treatment is identical 1, 2

3. Obtain chest CT pulmonary angiography only when:

  • Patient develops dyspnea, chest pain, or hemodynamic instability 1
  • Massive proximal UEDVT (subclavian/axillary) with high clot burden 2
  • Planning IVC filter placement (rare in UEDVT) 9

4. Maintain anticoagulation for minimum 3 months, identical to lower extremity DVT protocols 2, 3, 4

Common Pitfalls to Avoid

  • Do not withhold anticoagulation based on "low PE risk" – the 9–11.5% rate still represents significant morbidity, and recurrent VTE risk is substantial 1, 2
  • Do not assume asymptomatic UEDVT is benign – up to 36% of PE from UEDVT may be the presenting manifestation without arm symptoms 3, 4
  • Recognize that 16% of UEDVT patients have concurrent lower extremity DVT, which carries much higher PE risk and should be screened for when clinical suspicion exists 1
  • Weigh anticoagulation bleeding risk carefully – in the elderly or those with fall risk, the 1% PE mortality may be lower than anticoagulation-related intracranial hemorrhage risk 5

References

2
Guideline

Brachial DVT and Pulmonary Embolism Risk

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2026

3
Research

Upper extremity deep vein thrombosis.

Current opinion in pulmonary medicine, 1999

9
Guideline

Routine Lower‑Extremity Ultrasound After Confirmed Pulmonary Embolism – Guideline Summary

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2026

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Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.