Prevalence of cerebral cavernous malformations associated with developmental venous anomalies increases with age

Background and purpose To test the hypothesis that the prevalence of cerebral cavernous malformation (CCM) associated with developmental venous anomalies (DVAs) increases with age, we studied the age-related prevalence of DVA-associated CCM among patients with DVAs. Materials and methods Patients with DVAs on contrastenhanced MRI exams performed over a 2-year period were included in this study. A single neuroradiologist reviewed all imaging exams for the presence of CCMs. Baseline demographic data collected included age, gender, presence of CNS neoplasm, history of cranial radiation, and history of seizure. Patients were divided into age groups based on decade of life. Cochran-Armitage trend tests were performed to determine if increasing age was associated with CCM prevalence. Results A total of 1689 patients with DVAs identified on contrast-enhanced MRI were included. Of these patients, 116 (6.9%) had a cavernous malformation associated with the DVA. There was a significant positive association between age and the prevalence of DVA-associated CCM (P = 0.002). The prevalence of DVA-associated CCMwas 0.8% for the 010 age group, 1.6% for the 11-20 age group, 7.5% for the 2130 age group, 9.5% for the 31-40 age group, 6.1% for the 4150 age group, 6.3% for the 51-60 age group, 7.4% for the 6170 age group, and 11.6% for the > 70 age group (P <.0001). Conclusions Our study demonstrated an age-related increase in prevalence of DVA-associated cavernous malformations among patients with DVAs. These findings suggest that DVA-associated cavernous malformations are acquired lesions.