Diagnosis and Treatment of Chronic Cerebrospinal Venous Insufficiency (CCSVI)

Introduction to CCSVI

CCSVI due to left internal jugular vein (IJV) narrowing can lead to bilateral eye pain and pulsatile vision without headache through venous congestion effects, including retrograde pressure in the venous system, compensatory venodilation in ocular vessels, and choroidal vasculature abnormalities 1

Brain MRI with gradient echo or susceptibility-weighted sequences can be used to assess CCSVI 1
Optical Coherence Tomography (OCT) can evaluate subretinal fluid, choroidal thickness, and retinal pigment epithelium (RPE) changes, which are affected in CCSVI patients 1

Half-dose photodynamic therapy (PDT) is the most effective treatment for choroidal abnormalities in CCSVI patients, leading to complete resolution of subretinal fluid in 76-100% of cases, and improving visual acuity and reducing eye pain 2
ICGA-guided half-dose PDT targets underlying choroidal dysfunction, and is recommended as the first-line treatment for CCSVI with left IJV narrowing presenting with bilateral eye pain and pulsatile vision 2
Alternative treatments include Eplerenone (MR antagonist) for symptomatic relief, High-selectivity micropulse laser (HSML), and full-setting PDT for severe cases with posterior cystoid retinal degeneration (PCRD) 2, 3

Central serous chorioretinopathy (CSC) and choroidal neovascularization (CNV) should be ruled out as primary diagnoses, as they can present with similar symptoms to CCSVI 3

OCT monitoring should be performed at 4-8 weeks after treatment to assess symptom resolution and treatment efficacy 2
Repeat MR venography should be performed at 3-6 months to assess treatment outcomes and potential restenosis 1
Regular assessment of symptom resolution (eye pain and pulsatile vision) is necessary to determine the need for retreatment 2
The American College of Radiology recommends monitoring for improvement in both symptoms and venous distension on follow-up imaging to track recovery, and treatment focused on addressing the underlying cause should help reduce venous distension 4
Other venous abnormalities, such as venous sinus thrombosis or stenosis, should be ruled out as they may require different management approaches, as suggested by the American Heart Association and the American College of Radiology 5, 6