Overview
Posterior fossa compression syndrome, often referred to as May-Thurner syndrome, involves compression of the left iliac vein typically between the right iliac artery and lumbar vertebrae, leading to venous stasis and potential thrombosis or collateral vein formation 3.Diagnosis
Clinical Presentation: Symptoms include unilateral lower extremity swelling, pain, and deep vein thrombosis (DVT) 3.
Diagnostic Imaging: Computed tomography venography (CTV) is essential for identifying extrinsic compression of the iliac vein 1.
Grading: Compression types can be categorized based on CTV findings, often classified into types II and III involving middle and distal segments 1.Management
Endovascular Stenting: First-line treatment for symptomatic patients, with stent placement in compressed segments without typically requiring extension into the inferior vena cava 1.
Comprehensive Procedure: Combining stenting with endovenous laser ablation for concurrent varicose veins can improve outcomes 2.
Antiplatelet Therapy: Post-procedure administration to prevent stent thrombosis 1.Special Populations
Comorbidities: No specific guidelines provided for pregnancy, pediatrics, or elderly populations in the abstracts 123.Key Recommendations
Utilize CT venography for definitive diagnosis of iliac vein compression 1 (Evidence: Moderate).
Endovascular stenting is recommended for symptomatic patients with confirmed compression 1 (Evidence: Moderate).
Consider simultaneous treatment of varicose veins during the procedure to enhance patient outcomes 2 (Evidence: Moderate).References
1 Chen Z, Zhang XC, Sun Y, Xu M. Diagnosis and Treatment of Nonthrombotic Right Iliac Vein Compression Syndrome. Annals of vascular surgery 2019. link
2 Yang L, Liu J, Cai H, Liu Y. The clinical outcome of a one-stop procedure for patients with iliac vein compression combined with varicose veins. Journal of vascular surgery. Venous and lymphatic disorders 2018. link
3 Dheer S, Joseph AE, Drooz A. Retroperitoneal hematoma caused by a ruptured pelvic varix in a patient with iliac vein compression syndrome. Journal of vascular and interventional radiology : JVIR 2003. link