Prevalence of Incidental Intracranial Aneurysms in Oncologic Patients

The purpose of this retrospective study is to evaluate the prevalence and the imaging features of incidental intracranial aneurysms (IAs) in oncologic patients. We retrospectively examined 6599 brain CT studies performed for cancer staging (without and with intravenous iodinated contrast medium) at our institution, between January 2016 and December 2019. Subsequently, we selected only CT studies that revealed the presence of intracranial aneurysms as incidental findings; then, we recorded patients’ age and sex, primary tumour location and intracranial aneurysms position and size. Finally, the prevalence of intracranial aneurysms in this oncologic population was calculated. We found 60 intracranial aneurysms in 53 patients with a prevalence of 0.9%. There were 18 women and 35 men with a mean age of 67 years.