Abstract
Intracranial aneurysms occurring in 3 families are reported. As a result of the discovery of splenic artery aneurysms in 1 of the family members, the relation between intracranial aneurysms and aneurysms in other sites is discussed. Aneurysms might be a part of a generalized connective tissue disease, and the relation between aneurysms and some connective tissue diseases is stressed. Extensive angiographic investigations in family cases cannot be recommended in every family.