Dolichoectasia Diagnosis and Management
Definition and Pathological Features
- Dolichoectasia is a rare cerebrovascular disorder characterized by abnormal fusiform dilatation, elongation, and tortuosity of cerebral arteries, most commonly affecting the vertebrobasilar system 1
- The term "fusiform" describes the shape of these dilated vessels, distinguishing them from saccular aneurysms 2
Clinical Significance and Risk Factors
- Traditional cardiovascular risk factors, including hypertension and male sex, are strongly associated with dolichoectasia 1
- The relationship to atherosclerotic disease remains unclear, though both conditions may coexist 1, 3
Diagnostic Considerations and Management Approach
- Imaging should document vessel diameter, degree of tortuosity, and presence of associated complications like thrombus or mass effect 3, 4
- For patients with vertebrobasilar dolichoectasia and a history of ischemic stroke or TIA without other attributable causes, either antiplatelet or anticoagulant therapy is reasonable for preventing recurrent ischemic events, according to the American Heart Association 1
- Antithrombotic therapy addresses the thromboembolic risk from flow stagnation 1
- Blood pressure control and cardiovascular risk factor management are essential components of care 5