[Screening and management of intracranial aneurisms in patients with autosomal dominant polycystic kidney disease].

Autosomal dominant polycystic kidney disease is the most frequent hereditary kidney disease. Intracranial aneurysm prevalence in this population is four to five times higher than the prevalence in the general population. The most frequent complication of intracranial aneurysms is rupture with subarachnoidal hemorrhage, which is associated with a high morbidity and mortality. The only identified risk factor for unruptured intracranial aneurysm is a family history of intracranial aneurysm. However, most cases of aneurysm rupture occur without any family history of intracranial aneurysm. Magnetic resonance angiography without contrast medium injection facilitates screening, and progress have been made in preventive (endovascular or neurosurgical) treatment of intracranial aneurysm. Recommendations have recently been published concerning intracranial aneurysm screening, and suggest screening patients with autosomal dominant polycystic kidney disease and a family history of intracranial aneurysm, those who have an at-risk activity and those who request screening despite adequate information. Conflicting opinions exist, however, in the literature. Furthermore, a study of practice was conducted among French-speaking nephrologists in Europe and showed that approximately a third of the participants were in favor of systematic screening for intracranial aneurysm in all patients with autosomal dominant polycystic kidney disease. Beyond intracranial aneurysm prevalence, it is necessary to better define rupture rates in the autosomal dominant polycystic kidney disease population, with and without familial history of intracranial aneurysm. This would allow optimizing intracranial aneurysm screening practices in autosomal dominant polycystic kidney disease.