Why is DVT More Common In the Left Leg? Dr Raheel Moazzam’s New Study Gives Answers!
Dr Raheel Moazzam, Ultrasound specialist at ROC Clinic, posted on LinkedIn:
“Why is DVT more common in the left leg? It might be more than just “compression.”
I am excited to share the findings of my recent research at Imperial College London, where I investigated the anatomical markers that predispose individuals to Deep Vein Thrombosis (DVT).
While left-sided DVT is traditionally linked to May–Thurner syndrome (external compression by artery), my study explores a different angle: Intrinsic anatomy.
Key Takeaways from the Study:
- The “Left-Side” Difference: Even in asymptomatic individuals without external compression, the left common iliac vein (LCIV) was significantly narrower—averaging 2mm smaller than the right.
- An Independent Risk Factor: This narrowing appears to be a stable, intrinsic anatomical trait. It did not correlate with common risk factors like BMI or hydration status, suggesting some of us may simply be “wired” with a higher baseline risk for venous stasis.
- Proactive vs. Reactive: This research highlights a potential shift in how we screen for DVT. By identifying these anatomical variations early via duplex ultrasound, we could move toward proactive prevention for high-risk individuals.
Vascular health is often about the things we cannot see. I hope this work contributes to better risk stratification and earlier interventions for those at risk of iliofemoral DVT.
A huge thank you to my mentor, Dr. Mohammed Farid Aslam, and the team at the Heart and Lungs Institute for their invaluable support.
I’ve attached the full article below. I’d love to hear your thoughts, especially from fellow vascular scientists and clinicians!”
Title: Iliac Vein morphology and deep vein thrombosis: a cross-sectional analysis
Authors: Dr Raheel Moazzam, Dr. Mohammed Farid Aslam
Read full study here.
More posts exploring DVT and other hematology diseases in Hemostasis Today.
-
Jul 21, 2026, 21:12Ammar Al Awawdeh: Bridging the Hemostatic Gap – Functional Platelet Salvage in CPB
-
Jul 21, 2026, 19:44Shinya Goto: JCS/JPCPHS 2025 Guideline Now Available in English
-
Jul 21, 2026, 19:43Abdul Mannan: Why Is HbS or HbD Approximately 40% in Heterozygotes Rather Than 50%?
-
Jul 21, 2026, 19:42Haemophilia Maintains a 2025 Impact Factor of 3.0 – WFH
-
Jul 21, 2026, 19:41Wolfgang Miesbach: SR604 Restores Thrombin Generation Where It Is Needed
-
Jul 21, 2026, 19:40Filmon Tesfay: Our New Case Report on Cerebral Venous Thrombosis Is Now Published
-
Jul 21, 2026, 15:02Sham Zamil: The Role of ABO Compatibility in Platelet Pooling
-
Jul 21, 2026, 13:43Dima Shulkin: Assessing AI-Driven Blood Test Screening for Colorectal Cancer
-
Jul 21, 2026, 13:24Benoit Mores: National Initiative Targets Better Cardiovascular Outcomes