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Updated: Aug 30, 2026

Point-Of-Care Ultrasound Screening for Proximal Lower Extremity Deep Venous Thrombosis
Published on: February 10, 2023
Diagnosis of venous thromboembolism in children
Christoph Male1, Stefan Kuhle, Lesley Mitchell
1Children's Hospital University of Vienna, Vienna, Austria. c.male@akh-wien.ac.at
Insights
Pediatric venous thromboembolic events (VTE) often link to central venous lines (CVL). Accurate diagnosis requires objective testing, as clinical signs are unreliable for these significant, often asymptomatic, conditions.
Area of Science:
- Pediatric Medicine
- Vascular Medicine
- Diagnostic Imaging
Background:
- Venous thromboembolic events (VTE) in children are frequently associated with central venous lines (CVL).
- CVL-related VTE commonly occur in the central upper venous system.
- Many cases are asymptomatic or misdiagnosed due to underlying conditions, leading to potential complications.
Purpose of the Study:
- To evaluate the diagnostic accuracy of various imaging modalities for central venous line-related VTE in children.
- To determine the optimal imaging strategy for detecting VTE in both upper and lower central venous systems.
Main Methods:
- Review of diagnostic imaging techniques including ultrasound, venography, and magnetic resonance venography.
- Assessment of sensitivity and specificity for detecting VTE in different venous segments.
- Consideration of combined imaging approaches for comprehensive diagnosis.
Main Results:
- Clinical diagnosis of CVL-related VTE is unreliable.
- Ultrasound is insensitive for VTE in the central venous system; venography has limitations for jugular VTE.
- A combination of ultrasound and venography is necessary for accurate diagnosis in the upper venous system.
Conclusions:
- Objective radiographic screening is essential for diagnosing CVL-related VTE due to unreliable clinical presentation.
- Combined ultrasound and venography are recommended for upper venous system VTE.
- Magnetic resonance venography shows promise as a valid alternative for diagnosing VTE in both upper and lower central venous systems.
Abstract:
Venous thromboembolic events (VTE) in children are mostly related to central venous lines (CVL), and are located in the central upper venous system. The incidence of VTE in children with CVL is significant. However, the majority of CVL-related VTE do not present with typical symptoms or are not recognized due to underlying disease. Asymptomatic VTE still cause significant venous obstruction and are associated with short-term and long-term clinical complications. Because the clinical diagnosis of CVL-related VTE is unreliable, screening by objective radiographic testing is required. In the upper venous system, ultrasound is insensitive for the VTE in the central venous system and venography is not sensitive for jugular VTE. Therefore, a combination of ultrasound and venography is required for accurate diagnosis of CVL-related VTE in the upper venous system. Whether ultrasound alone is accurate for CVL-related VTE in the lower venous system is uncertain. Magnetic resonance venography will likely prove a valid alternative for diagnosis of VTE both in the upper and lower central venous system, and may be combined with magnetic resonance pulmonary angiography to screen for pulmonary embolism.
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